Sichuan Yonggui Science and Technology Co., Ltd.

Yonggui rail and industrial circular connector line covers bayonet/threaded and self-locking quick-connect structures for electrical and network signal interconnects in rolling stock and industrial equipment, with the GTC series as the core for modular mixed-signal transmission.

Rated current:46 A~800 A; Rated voltage:600 V~1500 V; Contact resistance:≤0.8 mohm; Insulation resistance:5000 Mohm; Withstand voltage:4000 V~6000 V; Mechanical life:750 cycles; Protection grade:IP67; Operating temperature:-55℃~+125℃

• Railway locomotives
• Passenger coaches
• High-speed EMUs
• Urban rail vehicles
• Maglev vehicles
• Rail signal and network transmission
• Industrial interconnect

Rectangular connector family for rail transit vehicles using rectangular mating structures and multi-pin contacts for high pin-count centralized wiring and signal/power mixed layouts; D-Sub connectors serve control and communication interfaces.

Rectangular mating structure; multi-pin configuration; signal and power mixed assembly; metal shielded housing; mis-insertion keying; secondary locking and anti-vibration retention; temperature -55C to +125C; up to IP67; meets rail vibration and flame EN 45545.

• Railway rolling stock
• EMU trains
• Urban rail vehicles
• On-board control cabinets
• Communication and control interfaces

Industrial heavy-duty connector line composed of housing, insert, contacts and accessories in a modular combination configurable by pin count and current rating; a foundational interconnect platform for Yonggui in industry and rail.

Modular structure (housing + insert + contacts + accessories); HC650 and HC350 series inserts and crimp inserts; silver-plated contacts; engineering plastic inserts; multi-pin high-current configurations; metal housing with fixing frame and cable clamp.

• Industrial equipment interconnect
• Rail transit vehicles
• Wind turbine cabinets
• Robot control cabinets
• Machinery power and signal

Hydraulic dampers for rail transit vehicles, part of Yonggui rail and industrial portfolio, used for vibration attenuation in vehicle suspension systems; supplied to CRRC and rail vehicle manufacturers.

Hydraulic damping structure per railway suspension requirements; stable damping force and durability; wide temperature range and long-term reciprocating service; meets rail vehicle safety and comfort requirements.

• Railway locomotives
• Railway passenger cars
• High-speed EMUs
• Urban rail vehicles

Rail vehicle gangway products connecting and sealing adjacent vehicles for passenger passage and environmental isolation; part of the rail and industrial vehicle components portfolio.

Integral or folding gangway structure; weather-resistant, abrasion-resistant and flame-retardant sealing; adapts to curve negotiation, extension and roll; meets rail gangway industry standards.

• Metro trains
• Light rail trains
• Intercity EMUs
• Trams

Rail vehicle passenger and sliding plug door systems covering door operators, door control units and door mechanisms for door open/close control; important electromechanical products of the rail and industrial segment.

Electric or pneumatic door operators with door control unit and obstacle detection; anti-pinch, emergency unlock and fault self-diagnosis; designed per rail vehicle door standards; high reliability and long life.

• Urban rail vehicles
• Metro trains
• Railway passenger cars
• Trams

Rail transit axle counter systems that detect train occupancy via axle counting on track sections; safety-critical equipment for signaling; supplied to railway and urban rail operators.

Electromagnetic or inductive wheel sensor axle counting; fail-safe design; supports track-section occupied/idle determination and train integrity check; meets signaling safety integrity level requirements.

• Railway line signaling
• Urban rail signaling
• Train occupancy detection
• Track section management

Rail vehicle pantograph systems collecting current from the overhead line to power the vehicle, including head, lift mechanism and control components; part of the rail and industrial vehicle electrical portfolio.

Single-arm or double-arm pantograph structure; pneumatic lift/lower control; contact pressure adjustment and automatic drop protection; adapts to different voltage classes and speeds; meets rail pantograph industry standards.

• Electric locomotives
• High-speed EMUs
• Urban rail vehicles
• Intercity trains

Smart power products for rail and industrial segments, mainly lithium battery systems providing auxiliary and emergency power for rail vehicles, with battery status monitoring and management.

Lithium battery pack with battery management system for voltage, current, temperature and SOC monitoring; overcharge and over-discharge protection and balancing; meets rail auxiliary power safety and reliability requirements.

• Rail vehicle auxiliary power
• Emergency power supply
• Industrial storage and backup

Connectors for industrial applications including robotic motor encoders and power circular connectors, plus wind turbine pitch and main control cabinet connection solutions.

Circular or rectangular multi-pin structure; supports encoder signal and power current in one system; anti-vibration, EMI-resistant and high protection design; suitable for long-term continuous industrial operation.

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

High-voltage shielded electrical connector line for new energy vehicles providing complete solutions for vehicle high-voltage, high-current interconnect across battery, drive and control loops, with secondary locking, HVIL and omnidirectional shielding.

High-voltage shielded structure; 90-degree outlet; secondary locking; HVIL; touch-proof and 360-degree shielding; covers 800V and below platforms; up to IP67/IP6K9K; meets large-current small-size EV requirements.

• NEV battery systems
• Drive systems
• Motor controllers
• HV distribution and charging loops
• Passenger and commercial vehicles

High-voltage harness and cable assemblies for NEVs, paired with HV connectors to form complete high-voltage interconnect for power transmission between battery, drive, PDU/BDU and charging ports.

High-voltage shielded cable and connector integration; large-current transmission; 360-degree shielding; oil, abrasion and temperature resistant; customizable length, routing and branches; meets EMC requirements.

• Battery pack HV loops
• Drive assembly HV connection
• PDU/BDU distribution
• Charging interface HV loops
• NEV commercial vehicles

NEV high-voltage distribution boxes including PDU and BDU for power distribution, protection and status monitoring of vehicle HV loops; key integration components of the high-voltage architecture.

Integrates HV relays, fuses, current/voltage sensing and HVIL loops; multi-channel HV input/output distribution; overcurrent, over-temperature and insulation monitoring; customizable per voltage platform; up to IP67.

• NEV passenger distribution
• Commercial and heavy-truck distribution
• Battery pack distribution
• Charging/swap HV distribution

NEV high-voltage cable connectors for reliable electrical connection and sealing between HV cables and equipment, with straight and angled outlets, used with HV connector systems.

Angled or straight outlet structure; fits HV shielded cable; reliable crimp and sealing; up to IP67; large-current and 360-degree shielding; meets HV loop touch-proof and vibration resistance requirements.

• Battery pack outlets
• Drive and control HV interfaces
• Charging port HV loops
• HV harness and equipment adapters

NEV MSD (Manual Service Disconnect) for cutting the battery HV loop during maintenance to protect personnel; mandatory component in the HV safety chain.

Manual plug-in HV disconnect; integrated HVIL signal loop; covers vehicle HV platforms; misoperation-proof and locking design; up to IP67; meets HV safety and vibration durability.

• Battery pack HV isolation
• Vehicle maintenance safety power-off
• HV distribution safety link

NEV battery-swap connectors for quick plug electrical connection between swappable battery packs and vehicle, supporting reliable automated swap docking and separation.

Large-current floating mating structure; auto-centering and tolerance compensation; mixed HV power and LV signal/communication loops; HVIL, touch-proof and high insertion-life design; up to IP67.

• Passenger car swap stations
• Commercial vehicle swap stations
• Electric heavy truck swap systems
• Shared swap-model vehicles

IPT (Inductive Power Transfer) wireless charging connection products for contactless energy transfer between ground and vehicle sides in NEVs.

Electromagnetic or magnetic-coupling wireless energy transfer; ground and on-board aligned transfer; foreign-object detection and living-body protection; meets wireless charging efficiency and safety standards.

• NEV wireless charging
• Automated parking charging
• Commercial and special vehicle auto-charging

Vehicle low-voltage signal connector line for NEV low-voltage signal, control and communication loops, together with HV connectors forming the vehicle electrical connection scheme.

Multi-pin LV signal structure; mis-insertion keying and locking; gold or tin-plated contacts for low resistance and signal stability; vibration, temperature and oil resistant; up to IP67.

• Vehicle LV control loops
• Sensor and actuator signal connection
• Body electronics
• Commercial vehicle control

NEV DC charging guns including charging-station DC guns and vehicle inlets, covering GB, EU and US interface types; among few domestic makers with full three-standard coverage.

GB/EU/US DC interfaces; rated voltage up to 1000V; large-current DC fast charging; integrated electronic lock, temperature monitoring and HVIL; high protection; plug, weather and touch-proof resistant.

• Public DC fast-charging piles
• Operator charging stations
• OEM vehicle DC charging
• Commercial vehicles and heavy trucks

Vehicle-side DC charging sockets installed at the vehicle charging interface, working with DC guns for power transfer and communication, supporting GB/EU/US interfaces.

Conforms to GB/EU/US DC interface dimensions and electrical requirements; integrated HVIL, temperature sensing and electronic-lock mating; rated voltage up to 1000V; up to IP67; meets vehicle-side vibration, weather and insertion-life.

• NEV passenger DC charging ports
• Commercial and heavy truck DC ports
• Swap and ultra-fast charge models

NEV AC charging guns including GB and EU (Type 2) types for home AC piles and AC slow-charging scenarios.

Conforms to GB/EU AC charging interface standards; single or three-phase AC charging; rated current 16A/32A etc.; electronic lock, temperature monitoring and touch-proof design; up to IP67; suitable for outdoor long-term use.

• Home AC charging piles
• Destination AC piles
• Public AC slow-charging piles
• OEM vehicle AC charging

Vehicle-side AC charging sockets working with AC guns for power and control-signal transfer in AC slow charging, covering GB and EU interfaces.

Conforms to GB/EU AC interface standards; single or three-phase AC input; integrated electronic-lock mating and temperature monitoring; up to IP67; meets vehicle-side plug, vibration and weather requirements.

• NEV passenger AC ports
• Commercial vehicle AC ports
• On-board charging scenarios

Core advantage product; high-power liquid-cooled supercharging guns remove heat via liquid circulation during charging for ultra-high-power fast charging; GB guns iterated in 2017-2018 and US guns verified; one of few covering GB/EU/US interfaces.

Operates at 1000V and 400A-500A, cutting charge time from 2-3h to 5-15min; liquid circulation cooling with liquid-cooled cable and coolant lines; integrated temperature monitoring and HVIL; high protection; high insertion life and outdoor weather resistance.

• High-power liquid-cooled supercharging piles
• Highway supercharging stations
• Urban public fast-charging stations
• Commercial vehicles and heavy trucks
• OEM brand supercharging networks

Charging guns and vehicle sockets for the megawatt fast-charging (MCS) segment, TUV certified, mainly for electric heavy trucks and construction machinery ultra-high-power replenishment.

Designed per MCS megawatt charging requirements; supports megawatt (over 1000kW) charging; liquid-cooled large-current transmission and thermal management; integrated HVIL and temperature monitoring; TUV certified; meets large-current, high-protection and high insertion-life.

• Electric heavy truck megawatt charging
• Construction machinery electrification
• Long-haul logistics supercharging
• Port and mining electric heavy trucks

Charging system accessories including motor electronic locks, cable connectors and protective caps to improve locking reliability, sealing protection and safety of charging interfaces.

Electronic locks with auto-locking and status feedback for AC/DC interfaces; cable connectors with straight/angled outlets and sealed protection; overall meets charging interface weather, abrasion and high insertion-life requirements.

• AC/DC charging piles
• Vehicle charging interfaces
• Charging gun cable assembly
• Charging facility maintenance replacement

ESC_HP series high-current connectors for energy storage, for large-current interconnect between battery clusters and converters in high-power storage; Yonggui high-protection/large-current ESS connector series.

Single-pin large-current structure; supports high-voltage ESS platforms; high protection (IP67+) and mis-insertion keying; silver-plated contacts reduce resistance; meets long-term continuous operation and weather.

• Container energy storage
• Commercial and industrial ESS
• Grid-side storage
• Battery cluster and PCS interconnect

ESC_TB series ESS connectors with terminal-block connection structure for battery modules, clusters and cabinet internal electrical connection; convenient installation and maintenance.

Terminal-block connection structure; multi-channel current distribution and wiring; reliable crimp/bolt connection and anti-loosening design; flame-retardant inserts; up to IP67; adapts to ESS long-term operation.

• ESS battery modules
• ESS battery clusters
• ESS cabinet internal connection
• Commercial and industrial ESS

ESC_ST series ESS connectors for standardized plug connection needs, for power and signal connection between battery systems and storage converters.

Standardized plug structure with locking and mis-insertion design; supports power current and signal mixed transmission; silver-plated contacts, flame-retardant inserts; up to IP67.

• Residential ESS
• Commercial and industrial ESS
• Container storage
• PCS (converter) connection

Single-pin high-protection connection series for outdoor and harsh-environment ESS large-current single-pin needs, emphasizing high protection and long-term reliability.

Single-pin large-current structure; high-protection design (IP67+); mis-insertion, touch-proof and locking functions; silver-plated contacts; weather/corrosion-resistant housing; adapts to outdoor ESS long-term operation.

• Outdoor container storage
• Grid-side storage
• Commercial and industrial ESS
• Battery cluster interconnect

Single-pin air-cooled connection series for air-cooled ESS, meeting medium power-density storage large-current connection and cooling coordination needs.

Single-pin large-current structure; fits air-cooled ESS; locking and mis-insertion design; silver-plated contacts reduce temperature rise; long-term continuous operation; up to IP67.

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

Mixed connection series for residential ESS integrating power and signal loops in one connector, simplifying interface count and assembly of residential storage equipment.

Power and signal mixed structure; large-current and communication signal in one interface; mis-insertion keying and locking; flame-retardant inserts, silver-plated contacts; up to IP67.

• Residential ESS
• Home PV-storage all-in-one
• Residential battery and inverter connection
• Small commercial and industrial ESS

Manual service switches for ESS, manually cutting the storage system HV/large-current loop during maintenance to protect personnel.

Manual plug-in disconnect; integrated interlock signal loop; large-current disconnection; misoperation-proof locking; flame-retardant inserts; up to IP67; adapts to ESS long-term operation.

• ESS maintenance power-off
• Commercial and industrial ESS safety link
• Container storage maintenance
• Residential ESS maintenance

Integrated series combining connectors, harness and distribution into one solution, reducing customer assembly and improving ESS interconnect reliability and efficiency.

Connector + harness + distribution integrated; customizable per voltage platform and loop count; HVIL, temperature monitoring and protection design; meets ESS long-term reliable operation.

• Container ESS system integration
• Commercial and industrial ESS cabinets
• Residential all-in-one
• ESS overall interconnect solution

Gold finger connector series for communication equipment using board-to-board gold finger mating for power and signal board-level interconnect in base stations and network equipment.

Board-to-board gold finger mating; multi-pin high density; gold-plated contacts for low resistance and high insertion life; supports large-current power and signal mixed transmission; meets uninterrupted operation.

• Communication base station equipment
• Communication network equipment
• Power module board interconnect
• Data center communication equipment

Module power connectors for communication equipment, for power interconnect between communication power modules and system backplanes, supporting hot-swap and high-reliability supply.

Hot-swappable power connection structure; large-current contact design; mis-insertion and guide structure; gold or silver-plated contacts; low resistance and stable supply; meets communication power reliability.

• Communication power modules
• Base station power supply
• Communication network power interconnect

Terminal block connector series for communication equipment for multi-channel power and signal wiring adapters inside network equipment, convenient for field wiring and maintenance.

Multi-channel terminal block wiring; bolt or spring crimp; flame-retardant inserts, tin or silver-plated contacts; reliable anti-loosening and mis-wiring design; meets communication equipment long-term operation.

• Communication base station equipment
• Communication network equipment
• Power and signal adapters
• Industrial control equipment wiring

Signal connector series for communication equipment for low-frequency signal and control loop connection in base stations and network equipment, ensuring signal stability.

Multi-pin signal structure; mis-insertion keying and locking; gold-plated contacts for low resistance and signal integrity; temperature/humidity resistant; meets communication equipment adaptability.

• Communication base stations
• Communication network equipment
• Signal and control loops
• Communication power monitoring

Vehicle high-speed mini-Fakra connector series for NEV cameras, radars and sensors high-speed data transmission; mainstream coaxial high-speed video/data link interface.

Multi-coaxial (4-in-1) high-density structure; high-speed differential/coaxial data transmission; 360-degree shielding and low return loss; vibration/temperature resistant; up to IP67; meets automotive reliability.

• Vehicle cameras
• Millimeter-wave radars
• ADAS perception systems
• Smart cockpit domain controllers
• Sensor high-speed data links

Vehicle high-speed data transmission HSED series for NEV and intelligent driving high-speed Ethernet and differential data transmission links.

High-speed differential signal structure; supports automotive Ethernet and other high-speed protocols; full shielding and low crosstalk for signal integrity; vibration/temperature resistant; up to IP67; meets automotive requirements.

• Vehicle Ethernet backbone
• Intelligent driving domain controllers
• Center console and instrument high-speed links
• ADAS domain controllers

Automotive Ethernet connector line for vehicle intelligence and E/E architecture evolution, providing gigabit automotive Ethernet and high-speed data interconnect; important part of the vehicle and energy-information segment.

Supports automotive Ethernet (100/1000BASE-T1 etc.) high-speed transmission; full-shielded twisted-pair structure; bandwidth up to Gbps; low insertion/return loss and excellent EMC; meets automotive vibration, temperature and protection.

• Smart cockpit domain controllers
• Instrument and center display
• ADAS domain controllers
• Vehicle cameras and radars
• Vehicle Ethernet backbone

Explosion-proof connectors for the special equipment segment, for electrical and signal connection in flammable and explosive hazardous environments, meeting explosion-proof safety levels.

Explosion-proof structure (flameproof/intrinsic safety); high-strength sealed metal housing; high protection and corrosion resistance; meets hazardous-environment electrical equipment explosion-proof standards; suitable for long-term outdoor and harsh use.

• Petrochemical plants
• Flammable and explosive hazardous sites
• Coal mines and underground equipment
• Special vehicles and equipment

Deep-sea/underwater connectors for electrical and signal connection in underwater and deep-sea environments, with high-pressure, seawater-corrosion and high-sealing characteristics.

Deep-sea high-pressure sealing structure; metal housing and corrosion-resistant materials; supports underwater wet-mate (per model); high water-tightness and seawater corrosion resistance; meets deep-sea equipment long-term underwater reliability.

• Deep-sea exploration equipment
• Underwater robots (ROV)
• Marine engineering equipment
• Ships and underwater systems

Nuclear power connectors for the special equipment segment, for electrical and signal connection in nuclear plants and nuclear industry, meeting reliability and radiation resistance requirements.

Radiation/heat resistant and high-sealing structure; metal housing and special materials; passes nuclear industry qualification tests; long-term maintenance-free reliability; meets nuclear plant safety levels.

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

Fiber optic connectors for the special equipment segment, for high-speed optical signal transmission in special equipment, with low loss, high reliability and environmental resistance.

Precision fiber optic contact alignment; low insertion loss and high return loss; supports single/multi-mode fiber; anti-vibration, anti-shock and high-protection design; meets special equipment environmental adaptability.

• Special communication systems
• Aerospace ground equipment
• Ship optical communication
• High-reliability optical signal transmission

Circular/micro-rectangular/RF electrical connectors for the special equipment segment, aimed at military and aerospace high-reliability applications, providing electrical, RF and signal interconnect solutions.

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

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

Shore power connectors for the special equipment segment, for electrical connection from shore power to ships during berthing, supporting shore power instead of fuel generation for green ports.

Large-current multi-pin structure; supports shore power voltage/frequency standards; high protection and salt-spray corrosion resistance; mechanical locking and misoperation-proof plug; meets port outdoor long-term use.

• Ship shore power supply
• Port shore power systems
• Green port retrofit
• Ship berthing replenishment

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

Quick-plug self-sealing structure; auto shut-off on disconnect to prevent leakage; pressure and coolant-corrosion resistant; mis-insertion and locking design; multiple insertion life; meets liquid cooling long-term maintenance-free operation.

• Data center liquid cooling
• ESS liquid cooling
• Charging pile liquid cooling
• Power electronics liquid cooling

LTC, LTF, LTY, LTP series fluid connectors covering different interface forms, flow and mounting needs, forming a complete liquid cooling quick-connect product family.

Quick-plug self-sealing structure; supports pressurized or unpressurized plug (per model); multiple interface and flow sizes; coolant-corrosion resistant; mis-insertion and locking design; meets leak-free and long-life liquid cooling loop.

• Data center liquid cooling loops
• ESS liquid cooling
• NEV liquid cooling loops
• Industrial liquid cooling equipment

UQD series fluid connectors compliant with OCP UQD (Universal Quick Disconnect) specification, for standardized leak-free quick connect in data center and AI server liquid cooling.

Blind-mate or quick-plug structure per UQD universal quick-disconnect spec; auto-seal on disconnect; low flow resistance and high flow design; coolant-corrosion resistant and long insertion life; meets high-density computing liquid cooling reliability.

• AI server liquid cooling
• Data center liquid cooling cabinets
• GPU liquid cooling modules
• High-density computing equipment cooling

Liquid cooling module products including cold plates, VC plates, heat-pipe plates, ESS plates and cooling chassis, providing device-to-chassis liquid cooling for high-heat components and systems.

Cold plates with aluminum alloy flow channels and customizable layout; VC and heat-pipe plates use phase-change for hotspot equalization; ESS plates and cooling chassis achieve battery or cabinet-level cooling; meets high power-density cooling.

• Power battery cold plates
• ESS battery cooling
• Data center server cooling
• Power electronics cooling
• High-density cabinet cooling

Liquid cooling pipeline products including hose assemblies, rigid assemblies and water distribution units for coolant transport, distribution and loop integration in liquid cooling systems.

Hose assemblies with coolant-resistant rubber or composite pipe and quick connectors; rigid assemblies with metal pipe forming and welding for high pressure and reliability; water distribution units for multi-channel flow distribution and centralized management; overall leak-free and long-term weather resistant.

• ESS liquid cooling pipelines
• Data center liquid cooling distribution
• NEV liquid cooling pipelines
• Charging pile liquid cooling loops

Yonggui custom solution design service covering sheet metal design, cabinet integration, harness customization, connector customization and distribution box customization, meeting diversified customer needs via full-process manufacturing.

Relies on plastic mold making, injection molding, sheet metal, high-speed stamping, precision machining and auto or semi-auto assembly workshops plus CNAS-certified test center; customizable structure, electrical and integration solutions per customer drawings and requirements.

• NEV HV distribution customization
• ESS interconnect customization
• Rail vehicle electrical integration
• Industrial equipment connection customization

Yonggui testing and supporting services including parts machining and personalized modification, conducting electrical, mechanical and environmental reliability verification via CNAS-certified test center.

CNAS-certified test center for electrical, mechanical and environmental (temperature or humidity, vibration, shock, salt spray) reliability tests; supports personalized modification and parts machining for customer verification and prototyping.

• Connector reliability verification
• HV connector electrical testing
• Environmental and vibration tests
• Prototype and modification

Connector specialized tool line including removal tools, crimping tools and various wrenches (fixed, adjustable, torque etc.) for standardized assembly, crimping and maintenance of connectors.

Crimping tools ensure contact crimp quality consistency; removal tools for non-destructive maintenance; wrenches covering fixed, adjustable and torque types for assembly torque control; improves connection reliability and assembly efficiency.

• Connector field assembly
• Harness crimping
• After-sales maintenance removal
• OEM and equipment assembly lines