Yonggui Electric

The circular connector line of Yonggui's rail transit and industrial division covers bayonet and threaded locking as well as self-locking quick push-pull variants, and is used for electrical and network signal interconnection on rolling stock and industrial equipment. Built around the GTC series, it can be combined modularly for mixed multi-signal transmission.

Rated Current: 46 A ~ 800 A; Rated Voltage: 600 V ~ 1500 V; Contact Resistance: ≤ 0.8 mΩ; Insulation Resistance: 5000 MΩ; Withstand Voltage: 4000 V ~ 6000 V; Mechanical Life: 750 cycles; Operating Temperature: -55 ℃ ~ +125 ℃; Protection Class: IP67

• Railway locomotives
• Passenger coaches
• High-speed EMUs
• Urban rail transit vehicles
• Maglev vehicles
• Track-side signalling and network transmission
• Electrical interconnection of industrial equipment

A rectangular connector family for rail transit vehicles that uses a rectangular mating structure with multi-pin contact layouts, well suited to high-pin-count concentrated routing and mixed signal/power arrangements. The D-Sub connectors serve control and communication interfaces.

Rectangular mating structure with multi-pin configurations supporting mixed signal and power contacts; shielded metal housing with mis-mating keys, secondary locking and anti-vibration release design; operating temperature -55 °C to +125 °C, protection up to IP67, conforming to rolling stock vibration, shock and flame-retardant (EN 45545) requirements.

• Railway locomotives and rolling stock
• EMU trainsets
• Urban rail transit vehicles
• Onboard electrical control cabinets
• Communication and control interfaces

An industrial heavy-duty connector line consisting of four main parts — housing, insert, contacts and accessories — assembled in a modular way so that pin count and current rating can be configured flexibly. It is Yonggui's foundational interconnection platform for industrial and rail transit applications.

Modular construction (housing + insert + contacts + accessories); HC650 and HC350 insert series plus cold-crimp insert series; silver-plated contacts and engineering-plastic inserts; supports multi-pin and high-current configurations; metal housing protection, with accessories such as mounting frames, cable clamps and earth plates.

• Industrial equipment electrical interconnection
• Rail transit vehicles
• Wind turbine pitch and main control cabinets
• Industrial robot control cabinets
• Machinery power and signal connection

Hydraulic dampers for rail transit vehicles, part of Yonggui's rail transit and industrial portfolio and used to damp vibration in rolling stock suspension systems. They are supplied to CRRC group companies and railway vehicle manufacturers.

Hydraulic damping structure designed to rolling stock suspension requirements; stable damping force characteristics and durability, suited to wide temperature ranges and long-term reciprocating duty, meeting rolling stock safety and ride-comfort requirements.

• Railway locomotives
• Railway passenger coaches
• High-speed EMU trainsets
• Urban rail transit vehicles

Gangway (bellows) products for rail vehicles that provide passage and sealing between adjacent cars so passengers can move through while the interior is isolated from the outside environment. They belong to Yonggui's rail transit and industrial vehicle-component line.

Integral or bellows-type gangway construction with weather resistance, abrasion resistance, flame retardancy and sealing performance; accommodates curve negotiation, extension and retraction and roll, meeting industry standards for rail transit vehicle gangways.

• Metro trains
• Light rail trains
• Intercity EMU trainsets
• Trams

Passenger compartment doors and plug doors for rail transit vehicles, covering door operators, door control units and door mechanisms, used for door open and close control on urban rail and railway vehicles. They are a key electromechanical product of the company's rail transit and industrial division.

Electric or pneumatic door operators with door control units (DCU) and obstacle detection; anti-pinch, emergency release and self-diagnostic functions; designed to rolling stock door standards for high reliability and long service life.

• Urban rail transit vehicles
• Metro trains
• Railway passenger coaches
• Trams

Rail transit axle counter systems that detect train occupancy by counting axles over a track section, forming a safety-critical element of railway signalling. Yonggui supplies this line to railway and urban rail transit operators.

Axle counting based on electromagnetic/inductive wheel-detection sensors with fail-safe design; supports track section occupied/clear determination and train integrity checking, meeting the safety integrity level requirements of rail signalling systems.

• Railway line signalling systems
• Urban rail transit signalling systems
• Train occupancy detection
• Track section management

Pantograph systems for rail transit vehicles that collect current from the overhead contact line to power the vehicle, comprising the collector head, raising mechanism and control components. They are part of Yonggui's rail transit and industrial vehicle electrical line.

Single-arm or double-arm pantograph construction with pneumatic raise and lower control, contact force adjustment and automatic lowering protection; accommodates different overhead line voltages and operating speeds, meeting pantograph industry standards for rail transit.

• Electric locomotives
• High-speed EMU trainsets
• Urban rail transit vehicles
• Intercity trains

Smart power products in the rail transit and industrial division, mainly lithium battery systems that provide auxiliary and emergency power for rail vehicles, with battery condition monitoring and management capability.

Lithium battery pack solutions with a battery management system (BMS) for voltage, current, temperature and SOC monitoring; overcharge and over-discharge protection with cell balancing, meeting the safety and reliability requirements of rolling stock auxiliary power supplies.

• Rolling stock auxiliary power
• Emergency power systems
• Industrial energy storage and standby power

Connectors for industrial applications, including encoder and power circular connectors for industrial robot motors, plus connection solutions for wind turbine pitch and main control cabinets, used in industrial robots and wind power equipment.

Circular or rectangular multi-pin construction supporting encoder signals and power current in one system; vibration-resistant and EMI-resistant design with a high protection class, suited to continuous operation in industrial environments.

• Industrial robots
• Wind turbine pitch systems
• Wind turbine main control cabinets
• Industrial automation equipment

A line of high-voltage shielded electrical connectors for new energy vehicles that offers a complete solution for vehicle high-voltage, high-current interconnection across battery pack, e-drive and power electronics circuits. The products feature secondary locking, high-voltage interlock and omnidirectional shielding.

High-voltage shielded construction with 90° cable exit options, secondary locking, high-voltage interlock loop (HVIL), touch-proof protection and 360° shielding; meets the high-current, small-size demands of NEV connectors, covering high-voltage platforms up to 800 V with protection up to IP67/IP6K9K.

• NEV traction battery systems
• Electric drive systems
• Motor controllers / power electronics units
• High-voltage distribution and charging circuits
• Passenger cars, commercial vehicles and electric heavy trucks

High-voltage harness and cable assembly products for new energy vehicles that pair with high-voltage connectors to form a complete high-voltage interconnection solution between battery, e-drive, PDU/BDU and charging inlet.

Integration of high-voltage shielded cables with connector assemblies; supports high-current transmission with 360° shielding and resistance to abrasion, oil and temperature; lengths, routing and branches can be customised to the vehicle high-voltage architecture, meeting electrical and EMC requirements.

• Traction battery pack high-voltage circuits
• E-drive assembly high-voltage connections
• PDU/BDU high-voltage distribution
• Charging inlet high-voltage circuits
• New energy commercial vehicles and electric heavy trucks

High-voltage distribution boxes for new energy vehicles, including PDU (power distribution unit) and BDU (battery distribution unit), used for power distribution, protection and status monitoring in the vehicle high-voltage circuit; a key integrated component of the high-voltage architecture.

Integrates high-voltage relays, fuses, current and voltage sensing and high-voltage interlock loops; supports multiple high-voltage inputs and outputs; overcurrent, overtemperature and insulation monitoring protection; customisable to vehicle voltage platform and circuit count, with protection up to IP67.

• NEV passenger car high-voltage distribution
• Commercial vehicle and electric heavy truck high-voltage distribution
• Traction battery pack distribution and protection
• High-voltage distribution in battery swap and charging systems

High-voltage cable joint products for new energy vehicles that provide reliable electrical connection and sealing between high-voltage cables and power-consuming equipment in straight and angled outlet forms, used together with the high-voltage connector system.

Angled or straight outlet construction compatible with high-voltage shielded cables; reliable crimp and sealing design with protection up to IP67 and above; supports high-current transmission and 360° shielding, meeting the touch-proof and vibration requirements of high-voltage circuits.

• Traction battery pack outlets
• E-drive and power electronics high-voltage interfaces
• Charging inlet high-voltage circuits
• High-voltage harness to equipment transition

MSD (Manual Service Disconnect) switches for new energy vehicles that cut the traction battery high-voltage circuit during maintenance and repair to protect service personnel; a mandatory component of the high-voltage safety chain.

Manual plug-in high-voltage isolation construction with an integrated high-voltage interlock (HVIL) signal loop; the rated voltage covers vehicle high-voltage platforms, with mis-operation prevention and locking design; protection up to IP67, meeting high-voltage safety and vibration/durability requirements.

• Traction battery pack high-voltage isolation
• Vehicle service safety power cut-off
• Safety chain of the high-voltage distribution system

Battery swap connectors for new energy vehicles that provide fast plug-in electrical connection between the battery pack and the vehicle on swap-capable models, supporting highly reliable mating and separation in automated swap processes.

High-current floating mating structure with self-alignment and tolerance compensation; supports mixed transmission of high-voltage power circuits and low-voltage signal/communication circuits; high-voltage interlock, touch-proof design and high mating cycle life, with protection up to IP67.

• Passenger car battery swap stations
• Commercial vehicle battery swap stations
• Electric heavy truck battery swap systems
• Shared battery swap models

IPT (Inductive Power Transfer) products for contactless energy transfer in new energy vehicles, enabling wireless charging coupling between the ground side and the vehicle side.

Wireless energy transfer based on electromagnetic induction and magnetic coupling, supporting aligned transfer between ground-side and vehicle-side units; safety features such as foreign object detection and living object protection, meeting the efficiency and safety requirements of NEV wireless charging standards.

• NEV wireless charging
• Automated parking charging scenarios
• Automated energy replenishment for commercial and special-purpose vehicles

A line of onboard low-voltage signal connectors for new energy vehicles, used for low-voltage signal, control and communication circuits and complementing the high-voltage connectors in the complete vehicle electrical connection solution.

Multi-pin low-voltage signal construction with mis-mating keys and locking design; gold- or tin-plated contacts for low contact resistance and signal stability; vibration, temperature and oil resistant, with protection up to IP67 depending on model.

• Vehicle low-voltage control circuits
• Sensor and actuator signal connections
• Body electronics systems
• Commercial vehicle electrical control

DC charging gun products for new energy vehicles, comprising charger-side DC guns and vehicle-side charging inlets and covering the Chinese, European and North American interface types; the company is one of the few Chinese manufacturers with full coverage of all three standards.

Covers GB, European and North American DC interface types; rated voltage up to 1000 V supporting high-current DC fast charging; integrated electronic lock, temperature monitoring and high-voltage interlock; high protection class with designs for mating durability, weathering and touch protection.

• Public DC fast charging posts
• Operator charging stations
• OEM on-board DC charging
• DC charging for commercial vehicles and electric heavy trucks

Vehicle-side DC charging socket products installed at the vehicle charging interface, working with the DC charging gun to complete DC fast-charge energy transfer and communication; GB, European and North American interfaces are supported.

Complies with the dimensions and electrical requirements of GB, European and North American DC charging interfaces; integrated high-voltage interlock, temperature sensing and electronic lock interface; rated voltage up to 1000 V, protection up to IP67, meeting vehicle-side vibration, weathering and high mating cycle requirements.

• NEV passenger car DC charging inlets
• Commercial vehicle and electric heavy truck DC charging inlets
• Battery swap and ultra-fast charging models

AC charging gun products for new energy vehicles, including Chinese standard and European Type 2 variants, used for energy transfer at household AC posts and in AC slow-charging scenarios.

Complies with GB and European AC charging interface standards; supports single-phase and three-phase AC charging with rated currents covering common 16 A and 32 A levels; electronic lock, temperature monitoring and touch protection, protection up to IP67 for long-term outdoor use.

• Household AC charging posts
• Destination AC charging posts
• Public AC slow charging posts
• OEM on-board AC charging

Vehicle-side AC charging socket products that work with the AC charging gun to complete energy and control signal transfer for AC slow charging, covering Chinese standard and European interface types.

Complies with GB and European AC charging interface standards; supports single-phase and three-phase AC input with an electronic lock interface and temperature monitoring; protection up to IP67, meeting vehicle-side mating durability, vibration and weathering requirements.

• NEV passenger car AC charging inlets
• Commercial vehicle AC charging inlets
• On-board charging scenarios

One of Yonggui's core strengths: high-power liquid-cooled ultra-fast charging guns that remove heat from the gun and cable through a liquid cooling loop to achieve extremely high charging power. As early as 2017–2018 the company completed iteration of its GB charging guns and development and validation of North American charging guns, making it one of the few Chinese manufacturers covering GB, European and North American interface types.

Operates at up to 1000 V and 400 A to 500 A charging current, shortening a conventional 2–3 hour charge to 5–15 minutes; liquid cooling circulation structure with matching liquid-cooled cable and coolant lines; integrated temperature monitoring and high-voltage interlock, high protection class, supporting high mating cycle life and outdoor weathering.

• High-power liquid-cooled ultra-fast charging posts
• Highway ultra-fast charging stations
• Urban public fast charging stations
• Ultra-fast charging for commercial vehicles and electric heavy trucks
• OEM branded ultra-fast charging networks

Charging guns and vehicle-side inlets for the megawatt charging (MCS, Megawatt Charging System) segment, already TÜV certified and mainly used for extremely high-power energy replenishment of electric heavy trucks and construction machinery.

Designed to MCS megawatt charging system requirements, supporting megawatt-level (above 1000 kW) charging power; liquid-cooled high-current transmission and thermal management design with integrated high-voltage interlock and temperature monitoring; TÜV certified, meeting requirements for high current, high protection and high mating cycle life.

• Megawatt fast charging for electric heavy trucks
• Electrified construction machinery energy replenishment
• Ultra-fast charging for long-haul logistics
• Electric heavy trucks at ports and mining sites

Accessories for charging systems, including motorised electronic locks, cable joints and protective caps, used to improve locking reliability, sealing protection and operating safety of the charging interface.

Electronic locks with automatic locking and status feedback, compatible with AC and DC charging interfaces; cable joints with straight or angled outlets ensuring sealed protection; the range meets charging interface requirements for weathering, abrasion resistance and high mating cycle life.

• AC and DC charging posts
• Vehicle charging interfaces
• Charging gun cable assembly
• Maintenance and replacement of charging infrastructure

ESC_HP series high-current connectors for energy storage systems, aimed at high-current interconnection between battery clusters and converters in high-power storage applications; the high-protection, high-current series of Yonggui's energy storage connector line.

High-current single-pole connection construction supporting high-voltage energy storage platforms; high protection class (IP67 and above) with mis-mating key design; silver-plated contacts reduce contact resistance, meeting the continuous operation and weathering requirements of energy storage equipment.

• Containerised energy storage systems
• Commercial and industrial energy storage
• Grid-side large-scale storage
• Battery cluster to PCS interconnection

ESC_TB series connectors for energy storage systems that use a terminal-block connection structure for electrical connection inside storage battery modules, battery clusters and storage cabinets, with convenient installation and maintenance.

Terminal-block connection structure supporting multiple current distribution and wiring branches; reliable crimp or bolted connection with anti-loosening design; flame-retardant insulator, protection up to IP67 depending on model, suited to long-term operation of energy storage equipment.

• Energy storage battery modules
• Energy storage battery clusters
• Internal connections of storage cabinets
• Commercial and industrial energy storage systems

ESC_ST series connectors for energy storage systems, addressing the standardised plug-in connection needs of storage equipment for power and signal connection between battery systems and storage conversion equipment.

Standardised plug-in connection structure with locking and mis-mating prevention design; supports mixed transmission of power current and signals; silver-plated contacts, flame-retardant insulator, protection up to IP67 depending on model.

• Residential energy storage systems
• Commercial and industrial energy storage systems
• Containerised energy storage
• Energy storage converter (PCS) connection

The single-pole high-protection connection series of Yonggui's energy storage portfolio, addressing high-current single-pole connection needs of storage systems in outdoor and harsh environments, with emphasis on high protection class and long-term reliability.

Single-pole high-current construction with high protection class (IP67 and above); mis-mating and touch protection with locking function; silver-plated contacts and a weathering, corrosion-resistant housing suited to long-term outdoor storage operation.

• Outdoor containerised energy storage
• Grid-side energy storage
• Commercial and industrial energy storage
• Energy storage battery cluster interconnection

The single-pole air-cooled connection series of the energy storage portfolio, used with air-cooled storage systems to meet the high-current connection and thermal co-design needs of medium power density storage equipment.

Single-pole high-current connection construction compatible with air-cooled storage systems; locking and mis-mating prevention design; silver-plated contacts reduce temperature rise and support long-term continuous operation, with protection up to IP67 depending on model.

• Air-cooled energy storage battery cabinets
• Commercial and industrial energy storage
• Residential energy storage
• Telecom base station energy storage

A hybrid connection series for residential energy storage systems that integrates power and signal circuits in a single connector, reducing the number of interfaces and assembly steps in home storage equipment.

Hybrid power and signal construction supporting high current and communication signals over one interface; mis-mating keys and locking design; flame-retardant insulator and silver-plated contacts, protection up to IP67 depending on model.

• Residential energy storage systems
• Household PV-plus-storage units
• Home storage battery to inverter connection
• Small commercial and industrial energy storage

Manual service switches for energy storage systems that manually isolate the high-voltage/high-current circuit during inspection and maintenance to protect operating personnel.

Manual plug-in isolation construction with an integrated interlock signal loop; high-current isolation capability with mis-operation prevention and locking design; flame-retardant insulator, protection up to IP67 depending on model, suited to long-term operation of storage equipment.

• Service power cut-off for energy storage systems
• Safety chains of commercial and industrial storage
• Containerised storage maintenance
• Residential storage maintenance

The integrated series of the energy storage portfolio, combining connectors, harnesses and distribution structures into a single solution that reduces customer assembly work and improves the reliability and assembly efficiency of storage system interconnection.

Integrated connector, harness and distribution structure; customisable to storage system voltage platform and circuit count; high-voltage interlock, temperature monitoring and protective design meeting long-term reliable operation requirements of storage equipment.

• Containerised energy storage system integration
• Commercial and industrial storage cabinets
• Residential storage all-in-one units
• Overall interconnection solutions for energy storage systems

Card-edge connector series for communication equipment that use a board-to-board card-edge mating structure for power and signal board-level interconnection in communication base stations and various network devices.

Board-to-board card-edge mating structure with high-density multi-pin layout; gold-plated contacts ensure low contact resistance and a high wear-resistant mating life; supports mixed high-current power and signal transmission, meeting the continuous operation requirements of communication equipment.

• Communication base station equipment
• Communication network equipment
• Power module board-level interconnection
• Data centre communication equipment

Modular power connectors for communication equipment, used for power interconnection between communication power modules and system backplanes, supporting hot swapping and highly reliable power supply.

Hot-swappable power connection structure with high-current contact design; mis-mating prevention and guiding features with gold- or silver-plated contacts; ensures low contact resistance and long-term stable power delivery to meet the reliability requirements of communication power equipment.

• Communication power modules
• Base station power supply systems
• Power interconnection of communication network equipment

Terminal block connector series for communication equipment, used for multi-channel power and signal wiring transition inside communication network devices for easier on-site wiring and maintenance.

Multi-channel terminal block wiring structure supporting screw or spring-cage termination; flame-retardant insulator with tin- or silver-plated contacts; reliable anti-loosening and mis-wiring prevention design meeting the long-term operation requirements of communication equipment.

• Communication base station equipment
• Communication network equipment
• Power and signal transition
• Wiring of industrial control equipment

Signal connector series for communication equipment, used for low-frequency signal and control circuit connection in communication base stations and network devices to safeguard signal transmission stability.

Multi-pin signal connection structure with mis-mating keys and locking design; gold-plated contacts ensure low contact resistance and signal integrity; temperature and humidity resistant, meeting the environmental adaptability and long-term reliability requirements of communication equipment.

• Communication base stations
• Communication network equipment
• Signal and control circuits
• Communication power supply monitoring

The mini-Fakra series of automotive high-speed connectors, used for high-speed data transmission from cameras, radar and sensors on new energy vehicles; a mainstream interface for coaxial high-speed video and data links.

High-density multi-coaxial (4-in-1) construction supporting high-speed differential and coaxial data transmission; 360° shielding and low return loss; vibration and temperature resistant with protection up to IP67, meeting automotive-grade reliability requirements.

• Vehicle cameras
• Millimetre-wave radar
• ADAS perception systems
• Smart cockpit domain controllers
• High-speed sensor data links

The HSED series of automotive high-speed data transmission connectors, used for high-speed Ethernet and differential data links in new energy vehicles and intelligent driving systems.

High-speed differential signal construction supporting automotive Ethernet and similar high-speed protocols; fully shielded design with low crosstalk for signal integrity; vibration and temperature resistant with protection up to IP67, meeting automotive-grade requirements.

• Automotive Ethernet backbone networks
• Intelligent driving domain controllers
• High-speed links for centre displays and instrument clusters
• ADAS domain controllers

The automotive Ethernet connector line addresses the evolution of vehicle intelligence and electrical/electronic architectures, providing gigabit-class automotive Ethernet and high-speed data interconnection for vehicles; an important part of Yonggui's automotive and energy information division.

Supports high-speed automotive Ethernet transmission (100/1000BASE-T1 and similar); fully shielded twisted-pair cable connection structure with bandwidth up to the Gbps range; low insertion loss, low return loss and excellent EMC performance, meeting automotive-grade vibration, temperature and protection requirements.

• Smart cockpit domain controllers
• Instrument cluster and centre display
• ADAS domain controllers
• Vehicle cameras and radar
• Vehicle Ethernet backbone networks

Explosion-proof connectors from the special equipment portfolio, used for electrical and signal connection in flammable and explosive hazardous environments, meeting explosion safety class requirements.

Explosion-proof structure designs (flameproof, intrinsically safe and similar) with a high-strength sealed metal housing; high protection class and corrosion resistance; meets explosion-proof standards for electrical equipment in hazardous areas and suits long-term outdoor and harsh environments.

• Petrochemical plants
• Flammable and explosive hazardous locations
• Coal mines and underground equipment
• Special-purpose vehicles and equipment

Deep-sea and deep-water connectors from the special equipment portfolio, used for electrical and signal connection in underwater and deep-sea environments with high pressure, seawater corrosion and sealing resistance.

High-pressure deep-sea sealing structure with metal housing and corrosion-resistant materials; supports underwater wet mating depending on model, with high water tightness and seawater corrosion resistance; meets the reliability requirements of long-term subsea operation of deep-sea equipment.

• Deep-sea exploration equipment
• Underwater remotely operated vehicles (ROV)
• Offshore engineering equipment
• Naval vessels and subsea systems

Nuclear power connectors from the special equipment portfolio, used for electrical and signal connection in nuclear power plants and related nuclear industry environments, meeting the special reliability and radiation resistance requirements of the nuclear sector.

Radiation-resistant, high-temperature and high-sealing structural design; metal housing and special materials that have passed relevant nuclear industry qualification tests; reliability for long-term maintenance-free operation meeting nuclear power plant safety class requirements.

• Nuclear power plant electrical systems
• Nuclear industry equipment
• Nuclear environment monitoring and control
• Special energy equipment

Fibre optic connectors from the special equipment portfolio, used for high-speed optical signal transmission in special equipment with low loss, high reliability and environmental resistance.

Precision-aligned optical contact structure with low insertion loss and high return loss; supports single-mode and multimode fibre with vibration, shock and high protection design; meets the environmental adaptability requirements of special equipment.

• Special communication systems
• Aerospace ground equipment
• Naval optical communication
• Highly reliable optical signal transmission

Circular, micro-rectangular and RF electrical connectors from the special equipment portfolio, aimed at military and aerospace high-reliability applications, providing electrical, RF and signal interconnection solutions.

High-strength metal housing with threaded or bayonet quick locking; high-density multi-pin layout with gold-plated contacts; vibration, shock, wide-temperature and high protection performance meeting military and aerospace reliability standards.

• Military equipment
• Aerospace equipment
• Radar and RF systems
• High-reliability electromechanical systems

Shore power connectors from the special equipment portfolio, used for the electrical connection that supplies ships from shore-based power while in port, supporting shore power as a replacement for fuel-based generation and meeting green port requirements.

High-current multi-pin construction supporting ship shore power voltage and frequency systems; high protection class and salt-spray corrosion resistance; mechanical locking and mis-operation prevention during mating, meeting long-term outdoor use requirements at ports.

• Ship shore power supply
• Port and terminal shore power systems
• Green port upgrades
• Energy replenishment for ships in port

LTA series fluid connectors for quick plug-in connection of coolant in liquid cooling systems, featuring pressurised mating and automatic sealing; a key leak-free connection component of liquid cooling systems.

Quick plug-in self-sealing structure that closes automatically on disconnection to prevent leakage; pressure and coolant corrosion resistant; mis-mating prevention and locking design with a multi-cycle mating life, meeting the long-term maintenance-free operation requirements of liquid cooling systems.

• Data centre liquid cooling systems
• Energy storage liquid cooling systems
• Charging post liquid cooling systems
• Power electronics liquid cooling

The LTC, LTF, LTY and LTP series of fluid connectors cover the different interface forms, flow rates and mounting methods required by liquid cooling systems, forming a complete liquid cooling quick-connect product family.

Quick plug-in self-sealing structure supporting pressurised or unpressurised mating depending on model; multiple interface specifications and flow bore options; coolant corrosion resistant with mis-mating prevention and locking design, meeting leak-free and long-life requirements of liquid cooling circuits.

• Data centre liquid cooling circuits
• Energy storage liquid cooling systems
• NEV liquid cooling circuits
• Industrial liquid cooling equipment

UQD series fluid connectors, universal quick disconnects compliant with the OCP UQD (Universal Quick Disconnect) specification, used for standardised leak-free quick connection in data centre and AI server liquid cooling systems.

Blind-mate and quick-connect structure compliant with the UQD universal quick disconnect specification; automatic sealing on disconnection with low flow resistance and high flow design; coolant corrosion resistance and a long mating life, meeting the liquid cooling reliability requirements of high-density computing equipment.

• AI server liquid cooling
• Data centre liquid-cooled racks
• GPU liquid cooling modules
• Heat dissipation for high-density computing equipment

Liquid cooling module products of the liquid cooling portfolio, including cold plates, VC vapour chambers, heat-pipe vapour chambers, storage plates and liquid-cooled chassis, providing cooling solutions from component level to chassis level for high-heat devices and systems.

Cold plates use an aluminium alloy channel structure with customisable channels and port positions; VC vapour chambers and heat-pipe vapour chambers use phase-change isothermal principles to reduce hot-spot temperature differences; storage plates and liquid-cooled chassis deliver battery or cabinet-level cooling for high power density heat dissipation.

• Traction battery liquid cooling plates
• Energy storage battery liquid cooling
• Data centre server liquid cooling
• Power electronics component cooling
• High power density cabinet cooling

Liquid cooling line products of the liquid cooling portfolio, including hose assemblies, rigid pipe assemblies and water distribution units, used for coolant transport, distribution and circuit integration in liquid cooling systems.

Hose assemblies use coolant-resistant rubber or composite lines with quick connectors; rigid pipe assemblies are formed and welded from metal tube for high pressure and high reliability; water distribution units provide multi-channel flow distribution and centralised management, meeting leak-free and long-term weathering requirements.

• Energy storage liquid cooling lines
• Data centre liquid cooling distribution
• NEV liquid cooling lines
• Charging post liquid cooling circuits

Customised solution design services offered by Yonggui, covering sheet metal design, cabinet integration customisation, harness customisation, connector customisation and distribution box customisation, supported by a full-process manufacturing chain (tooling, injection moulding, sheet metal, stamping, precision machining, assembly) to meet varied customer requirements.

Rated voltage/current: 1000 V DC / 250 A; Contact resistance: ≤0.5 mΩ; Insulation resistance: ≥5000 MΩ; Insertion life: ≥500 cycles; Protection rating: IP67 / IP6K9K; Shielding type: 360° metal; System certification: IATF 16949 / CNAS

• Custom high-voltage distribution for new energy vehicles
• Custom energy storage system interconnection
• Rail transit vehicle electrical integration
• Customised connection solutions for industrial equipment

Testing and supporting services provided by Yonggui, including part machining services and individual modification, delivered through the company's internationally CNAS-accredited testing centre for electrical, mechanical and environmental reliability verification.

The CNAS-accredited testing centre can perform electrical performance, mechanical performance and environmental (temperature/humidity, vibration, shock, salt spray) reliability tests; supports individual product modification and part machining to meet customer verification and trial production needs.

• Connector reliability verification
• Electrical performance testing of high-voltage connectors
• Environmental and vibration testing
• Sample trial production and modification

A special-purpose tool product line for connectors, including removal tools, crimping tools and various wrenches (fixed, adjustable, torque), used for proper connector assembly, crimping and maintenance removal work.

Crimping tools ensure consistent crimp quality of contacts; removal tools allow non-destructive connector removal for maintenance; wrenches cover fixed, adjustable and torque types to meet assembly torque control requirements, improving connection reliability and assembly efficiency.

• On-site connector assembly
• Harness crimping work
• After-sales repair and removal
• OEM and equipment maker assembly lines