Changzhou Tenglong Auto Parts Co., Ltd.

The automotive AC line assembly is the core thermal-management component business of Tenglong Co., Ltd. (603158), covering refrigerant transport lines for both conventional and new-energy vehicle air-conditioning and heat-pump systems. As vehicles electrify, the product is upgrading toward integrated heat-pump lines that simultaneously meet cabin, battery, and e-drive multi-circuit thermal-management needs. The company is a leading domestic supplier of automotive AC lines, serving customers such as Volkswagen, BYD, Tesla, Li Auto, and NIO.

Material: aluminum tube / rubber hose / multi-layer composite tube; Compatible refrigerant: R134a, R744(CO₂), R290; Pressure rating: customized by model; Temperature range: customized by model; Connection: quick-connect / flange / crimp

• New-energy vehicle air conditioning
• Heat pump system
• Cabin thermal management
• Battery thermal management

The thermal-management integrated module is Tenglong's core integrated product under its new-energy-led strategy, integrating valve blocks, heat exchangers, and lines for multi-circuit thermal management into a single module. Per the annual report, the module supports R134a and R744(CO₂) refrigerants, enabling integrated intelligent temperature control of cabin, battery, and e-drive. It represents the company's shift toward 'component + system integration' total solutions.

Compatible refrigerant: R134a, R744(CO₂); Integration level: highly integrated multi-circuit valve block / heat exchanger; Pressure rating: customized by model; Temperature range: customized by model; Connection: customized by model

• New-energy vehicle thermal management
• Heat pump system
• Battery thermal management
• E-drive cooling

The high-pressure line system is Tenglong's high-pressure thermal-management fluid conveyance solution developed for 800V high-voltage-platform new-energy vehicles, listed as a core product in official industry reviews. The system comprises four main parts—new-energy thermal-management high-pressure hard lines, CO₂ heat-pump high-pressure lines, battery-cooling high-pressure lines, and high-pressure connectors—meeting high-pressure, vibration-resistant, and high-sealing requirements. It covers multiple high-pressure circuits on both refrigerant and coolant sides.

Pressure rating: high pressure (for 800V platform); Material: aluminum / stainless steel / multi-layer composite tube; Temperature range: customized by model; Composition: high-pressure hard line, CO₂ heat-pump high-pressure line, battery-cooling high-pressure line, high-pressure connector; Connection: quick-connect / flange

• New-energy vehicle thermal management
• Battery cooling
• CO₂ heat pump system
• High-pressure fluid conveyance

The new-energy thermal-management high-pressure hard line is the metallic piping component of the high-pressure line system, used to convey high-pressure refrigerant and coolant within new-energy vehicle thermal-management circuits. Formed from aluminum-alloy or stainless-steel hard tubes, it offers high pressure resistance, vibration resistance, and light weight. Official industry reviews list it as a core subcategory of Tenglong's high-pressure line system.

Material: aluminum alloy / stainless steel; Pressure rating: high pressure (for 800V platform); Temperature range: customized by model; Forming: bending / laser welding; Connection: quick-connect / flange

• New-energy vehicle thermal management
• Battery cooling
• E-drive cooling
• High-pressure fluid conveyance

The CO₂ heat-pump high-pressure line is designed specifically for integrated heat-pump systems using R744(CO₂) refrigerant, where operating pressure is markedly higher than in conventional R134a systems. As the core CO₂ heat-pump-compatible high-pressure line in Tenglong's high-pressure line system, it works with the CO₂ heat-pump valve-block module to deliver efficient low-temperature heating. Official industry reviews explicitly list it as a core product component.

Compatible refrigerant: R744(CO₂); Pressure rating: ultra-high pressure (CO₂ system); Material: aluminum / stainless steel; Temperature range: customized by model; Connection: high-pressure quick-connect / flange

• CO₂ heat pump system
• New-energy vehicle thermal management
• Cabin heating
• Battery thermal management

The battery-cooling high-pressure line conveys high-pressure coolant in the liquid-cooling circuit of the traction battery pack, and is a key component of Tenglong's high-pressure line system for battery thermal management. Working with the battery cooling plate, water pump, and integrated module, it safeguards battery-pack temperature safety during fast charging and high-rate discharging. Official industry reviews list it as a core company product component.

Purpose: traction battery liquid-cooling circuit; Pressure rating: high pressure; Material: aluminum / rubber composite; Temperature range: customized by model; Connection: quick-connect / flange

• Battery thermal management
• Battery cooling
• New-energy vehicle thermal management
• Fast-charging temperature control

The high-pressure connector is the connection and sealing component within the new-energy thermal-management high-pressure line system, including high-pressure quick-connect couplers, flanges, and transition fittings. It provides reliable joining between high-pressure hard lines, CO₂ heat-pump high-pressure lines, and battery-cooling high-pressure lines, meeting high-sealing and vibration-resistant requirements. Official industry reviews list it as a core part of the company's high-pressure line system.

Type: high-pressure quick-connect / flange / transition fitting; Pressure rating: high pressure (for 800V platform); Material: aluminum / stainless steel / engineering plastic; Sealing: customized by model; Connection: quick-connect / bolt

• New-energy vehicle thermal management
• High-pressure fluid conveyance
• Battery cooling
• CO₂ heat pump system

The core thermal-management components are Tenglong's key component set from its diversified thermal-management industry-chain layout, listed as a core product in official industry reviews. Covering the electric water pump, EGR cooler, plate heat exchanger, and CO₂ heat-pump valve-block module, they support the company's full-chain capability from component to system integration in new-energy thermal management. Together with AC lines, high-pressure lines, and integrated modules, they form a complete product matrix.

Composition: electric water pump, EGR cooler, plate heat exchanger, CO₂ heat-pump valve-block module; Compatible refrigerant: R134a, R744(CO₂); Pressure/temperature: customized by model; Connection: customized by model

• New-energy vehicle thermal management
• Battery thermal management
• E-drive cooling
• Heat pump system

The electric water pump is one of Tenglong's core thermal-management components, providing active coolant circulation in the water circuit of new-energy vehicle thermal management. Serving as the liquid-cooling power unit for battery cooling, e-drive cooling, and cabin heat-pump circuits, it achieves precise temperature control together with integrated modules and high-pressure lines. The annual report lists it among the company's main products, with customers among major domestic and international new-energy automakers.

Type: electric water pump (brushless); Flow rate / head: customized by model; Voltage: customized by vehicle (incl. high-voltage platform); Temperature range: customized by model; Protection class: customized by model

• Battery thermal management
• E-drive cooling
• New-energy vehicle thermal management
• Cabin thermal management

The EGR (exhaust gas recirculation) cooler is one of Tenglong's core thermal-management components, used to cool recirculated exhaust gas and thereby lower emissions and intake temperature. It performs exhaust waste-heat management in hybrid new-energy vehicles and conventional powertrain thermal-management scenarios, extending the company's heat-exchange technology. Official industry reviews list it as a core component, and the annual report also includes EGR system products.

Type: EGR cooler (gas-liquid heat exchange); Material: stainless steel / aluminum; Pressure rating: customized by model; Temperature range: customized by model; Connection: flange / clamp

• Exhaust gas thermal management
• Hybrid vehicle thermal management
• New-energy vehicle thermal management
• Emission control

The plate heat exchanger is one of Tenglong's core thermal-management components, using a compact plate structure to achieve efficient heat exchange between refrigerant and coolant or between liquids. Widely used for heat dispatch among battery, e-drive, and cabin thermal-management circuits in new-energy vehicles, it supports integrated heat pumps and multi-circuit temperature control. The annual report lists it among the company's main products.

Type: brazed plate heat exchanger; Material: stainless steel / aluminum; Heat-exchange efficiency: customized by model; Pressure rating: customized by model; Temperature range: customized by model

• Battery thermal management
• E-drive cooling
• Heat pump system
• New-energy vehicle thermal management

The CO₂ heat-pump valve-block module is Tenglong's core valve assembly developed for R744(CO₂) integrated heat-pump systems, ranked first among core products in official industry reviews. Integrating multiple electronic expansion valves, solenoid valves, and reversing valves, it switches the CO₂ heat-pump system among cooling, heating, and dehumidification modes. Together with CO₂ heat-pump high-pressure lines and integrated modules, it forms a low-temperature high-efficiency heat-pump solution.

Compatible refrigerant: R744(CO₂); Composition: electronic expansion valve / solenoid valve / reversing valve integrated; Pressure rating: ultra-high pressure (CO₂ system); Temperature range: customized by model; Control: electronic control

• CO₂ heat pump system
• New-energy vehicle thermal management
• Cabin heating
• Battery thermal management

The accumulator (heat-exchange gas-liquid separator) is a key accessory in automotive air-conditioning and heat-pump systems, used to separate and store excess liquid refrigerant, protect the compressor, and improve system efficiency. Tenglong offers heat-exchange gas-liquid separator products, an important part of its thermal-management component system. The annual report lists it among the company's main products.

Type: gas-liquid separator / receiver-drier; Compatible refrigerant: R134a, R744(CO₂), R290; Material: aluminum; Volume: customized by model; Connection: line welding / quick-connect

• New-energy vehicle air conditioning
• Heat pump system
• Cabin thermal management
• Battery thermal management

The system connection hard lines and accessories are the connecting piping and fittings in Tenglong's automotive heat-exchange system, used for rigid connections among the AC line assembly, radiator, and heat exchangers. Formed from aluminum-alloy hard tubes and paired with brackets, clamps, and other accessories, they form the connective backbone of the thermal-management fluid circuit. The annual report lists them among the company's main products.

Material: aluminum-alloy hard tube; Forming: bending / welding; Pressure rating: customized by model; Temperature range: customized by model; Accessories: bracket / clamp / fitting

• New-energy vehicle air conditioning
• Battery thermal management
• E-drive cooling
• Automotive heat-exchange system

The accumulator (automotive heat-exchange system receiver / receiver-drier) stores, dries, and filters refrigerant in air-conditioning and heat-pump systems, and is a key component of heat-exchange system accessories. Tenglong supplies it as a supporting product for automotive heat-exchange systems, together with the AC line assembly. It is an auxiliary storage and purification unit within the thermal-management fluid circuit.

Type: receiver-drier; Compatible refrigerant: R134a, R744(CO₂); Material: aluminum; Volume: customized by model; Connection: line welding / quick-connect

• New-energy vehicle air conditioning
• Heat pump system
• Automotive heat-exchange system
• Cabin thermal management

The automotive rubber hose is the flexible piping component in Tenglong's thermal-management fluid lines, providing flexible connection and compensation between the AC line assembly and connection hard lines. Resistant to refrigerant, aging, and temperature, it combines with aluminum hard tubes to form a complete automotive AC and heat-pump line. The annual report lists it among the company's main products.

Material: rubber / multi-layer composite; Compatible refrigerant: R134a, R744(CO₂); Pressure rating: customized by model; Temperature range: customized by model; Connection: crimp / quick-connect

• New-energy vehicle air conditioning
• Heat pump system
• Automotive heat-exchange system
• Cabin thermal management

The corrugated hose (bellows) is a flexible compensation and protection component in Tenglong's thermal-management lines, absorbing thermal expansion, contraction, and vibration displacement to protect the reliability of AC and heat-pump line connections. It can be combined with hard tubes and rubber hoses in new-energy vehicle thermal-management circuits. The annual report lists it among the company's main products.

Type: metal corrugated hose / compensation tube; Material: stainless steel / aluminum; Pressure rating: customized by model; Temperature range: customized by model; Purpose: thermal compensation / vibration damping / protection

• New-energy vehicle air conditioning
• Heat pump system
• Automotive heat-exchange system
• Battery thermal management

The coaxial tube assembly is a double-walled sleeve component in Tenglong's automotive heat-exchange system, with inner and outer tubes carrying refrigerant and coolant respectively for compact, efficient heat exchange, commonly used in heat-pump and battery thermal-management circuits. It is an important part of the company's heat-exchange line product family, supporting space and efficiency optimization of integrated thermal-management solutions.

Type: coaxial sleeve assembly; Material: aluminum; Compatible refrigerant: R134a, R744(CO₂); Pressure rating: customized by model; Temperature range: customized by model; Connection: welding / quick-connect

• Heat pump system
• Battery thermal management
• New-energy vehicle thermal management
• Automotive heat-exchange system

The automotive heat-exchange system accessories are Tenglong's set of supporting parts around the AC line assembly and heat-exchange system, including brackets, clamps, fittings, and storage and separation accessories. Together with system connection hard lines, rubber hoses, and accumulators, they form a complete thermal-management line support system. The annual report lists them as heat-exchange-system-related products.

Composition: bracket / clamp / fitting / accessory; Material: aluminum / steel / engineering plastic; Pressure rating: customized by model; Temperature range: customized by model; Connection: bolt / clip / quick-connect

• New-energy vehicle air conditioning
• Automotive heat-exchange system
• Battery thermal management
• Heat pump system