Chuanhuan Technology

Cooling system hose and assembly product family shown in the product center of the official website, covering engine cooling water hoses, heater hoses, etc. With EPDM rubber as the main material, they resist coolant corrosion and high temperature (approx. -40°C to 150°C, according to the company's product introduction materials) for engine coolant circulation systems; the range extends to NEV battery cooling hoses (ethylene glycol coolant), motor cooling hoses and thermal management system lines, featuring flame retardancy (UL94 V-0), insulation and chemical-media resistance. The company supplies more than 300 vehicle manufacturers including Dongfeng, Changan, SAIC-GM-Wuling, Great Wall, Geely and Chery; products follow the IATF16949 system and have passed CCC, QS9000/VDA6.1, ISO14001, OHSAS18001, US CARB and EU RoHS certifications.

EPDM rubber as main material; coolant corrosion resistant; operating temperature approx. -40°C to 150°C; flame-retardant UL94 V-0; insulating and chemical-media resistant

• Engine coolant circulation and heater/air-conditioning water circuits
• Liquid-cooling loops for NEV power batteries, motors and motor controllers
• Data-center liquid cooling heat dissipation scenarios

Fuel series hose and assembly product family shown in the official product center (website meta keywords include 'fuel hose' and 'vacuum hose'), used for automotive fuel delivery, including fuel hoses and evaporative emission hoses, with oil resistance, low permeability and high-temperature resistance, meeting the China VI emission standard; covering multi-layer composite fuel hoses for gasoline/diesel vehicles and quick-connector assemblies. The 'Euro III automotive new fuel hose' developed by the company in 2003 and the 'flexible FTPV ultra-low-permeation eco fuel hose' developed in 2008 were both listed as national key new products by the Ministry of Science and Technology, representing domestically leading technology. Products have passed US CARB and EU RoHS environmental certifications and meet low-permeation eco requirements.

Oil-resistant, low-permeation and high-temperature resistant; meets the China VI emission standard; multi-layer composite structure with quick-connector assemblies; passed US CARB and EU RoHS eco certifications

• Gasoline/diesel engine fuel delivery
• Evaporative emission (EVAP) control systems
• Vacuum assist circuits
• Hybrid vehicle engine fuel line systems (2010 national key new product)

Braking system hose and assembly product family shown in the official product center; the website title and meta keywords both highlight 'braking system' and 'vacuum hose'. Hydraulic brake hoses transmit braking pressure, meet SAE standard requirements, feature high-pressure resistance (>20MPa) and aging resistance, and include metal fitting assemblies; vacuum hoses for vacuum-assist braking systems are also supplied. The company has established a complete quality assurance system, passing CCC product quality certification from the China Automobile Certification Committee as well as QS9000/VDA6.1, IATF16949 and other certifications, providing system assurance for braking safety parts.

Hydraulic brake hoses withstand >20MPa; meet SAE standard requirements; aging resistant; with metal fitting assemblies

• Hydraulic brake circuits of passenger/commercial vehicles
• Vacuum booster connecting lines
• ABS/ESP related brake line assemblies

Power steering system hose and assembly product family shown in the official product center (website meta keywords include 'power steering system'). Used in automotive hydraulic power steering systems, including high-pressure steering hoses and return hoses, resistant to hydraulic oil with pulse fatigue life exceeding industry standards; high-pressure hoses must withstand the high-pressure pulse conditions of the steering pump. The 'high-pressure power steering hose assembly' successfully developed by the company in 2006 was listed by the Ministry of Science and Technology as a 2007 national key new product, reflecting this family's technical accumulation.

Hydraulic-oil resistant; pulse fatigue life exceeding industry standards; high-pressure hoses withstand steering pump high-pressure pulses; 2007 national key new product

• High-pressure supply and return circuits of hydraulic power steering (HPS) systems
• Electric hydraulic power steering (EHPS) line supply

Turbocharging hose and assembly product family shown in the official product center ('turbocharging lines' is the first meta keyword on the website). Air intake hoses for turbocharging systems resist high temperature (180°C instantaneous) and pressure, and feature an electromagnetic shielding function; made of silicone rubber or fluororubber (FKM), they are supplied with reinforcement layers and fitting assemblies, and are used in the pressure lines between the turbocharger and the intercooler.

Silicone rubber or fluororubber (FKM) material; 180°C instantaneous high-temperature resistance; pressure-bearing; electromagnetic shielding function; with reinforcement layers and fitting assemblies

• Intercooler intake/discharge lines of turbocharged engines
• Turbocharger oil supply and return lines
• Crankcase ventilation (PCV) high-temperature lines

Nylon tube and assembly product family shown in the official product center — polyamide (nylon 11/nylon 12 and other engineering plastics) automotive tubes and assemblies with fuel resistance, chemical-media resistance, low permeability, weather resistance and lightweight properties; they can be supplied as assemblies with quick connectors and are widely used for media delivery in fuel, air brake, vacuum and other systems.

Polyamide (nylon 11/nylon 12) material; fuel and chemical-media resistant; low permeability; weather resistant and lightweight; available with quick-connector assemblies

• Fuel delivery and evaporative lines
• Commercial vehicle air brake lines
• Vacuum lines
• Lightweight automotive fluid lines

Body accessory system and assembly product family shown in the official product center; 'accessory systems' is an independent product category in the company's main business, covering rubber-plastic hoses and assemblies for body accessory systems (such as windshield washer fluid delivery hoses), meeting lightweight requirements and the installation structures of different vehicle models. This family stands alongside the fuel and cooling main families as one of the company's 9 product series.

Rubber-plastic hoses and assemblies; meets lightweight requirements; adapts to the installation structures of different vehicle models

• Windshield washer fluid circuits
• Delivery and protection of media in body accessory systems

Intake/exhaust system hose and assembly product family shown in the official product center; the website meta description reads 'product range covers ... intake and exhaust system hoses', with meta keywords including 'intake/exhaust system'. This family is used for the delivery of media related to engine intake and exhaust, including intake hoses, crankcase ventilation hoses, etc.; it must meet temperature, aging and media resistance requirements, and works with the turbocharging hose family to cover intake pressure lines.

Intake hoses, crankcase ventilation hoses, etc.; temperature, aging and media resistant; covers intake pressure lines together with the turbocharging hose family

• Engine intake systems
• Positive crankcase ventilation (PCV) systems
• Exhaust auxiliary lines

Oil cooling tube and assembly product family shown in the official product center — high-performance hoses and assemblies for automotive lubrication/oil-cooling systems. The 'high-performance ER hose for automotive lubrication systems' successfully developed by the company in 2005 was listed by the Ministry of Science and Technology as a 2006 national key new product, reflecting the technical accumulation in lubrication/oil-cooling lines; oil cooling tubes must resist high temperature and oil media and withstand long-term pulsating conditions, and can form assemblies with metal fittings.

High-temperature and oil-media resistant; withstands long-term pulsating conditions; can form assemblies with metal fittings; 2006 national key new product (ER hose)

• Automatic transmission (AT/DCT) oil cooling circuits
• Engine oil cooling circuits
• Hydraulic oil cooling circuits

One of the company's core product families, with dedicated air-conditioning hose production lines. A/C hose assemblies cover high/low-pressure charging hoses, adopt nylon composite layer structures, resist refrigerant permeation and meet the -40°C to 135°C operating temperature range. The 'ultra-low-permeation PR alloy automotive A/C hose' developed by the company in 2004 was listed as a national key new product and received support from the national Science and Technology SME Technology Innovation Fund, being one of the company's 8 national key new products. The official product center page includes this family in image form; specific parameters are subject to the company's product introduction materials.

Nylon composite layer structure; refrigerant (R134a, etc.) permeation resistant; operating temperature -40°C to 135°C; high/low-pressure charging hoses; 2004 national key new product

• Refrigerant high-pressure and low-pressure side lines of automotive A/C systems
• Charging/service port line assemblies

Dedicated fluid line product family for new energy vehicles and liquid-cooling thermal management, including battery cooling hoses (ethylene glycol coolant delivery), motor cooling hoses and thermal management system lines, with flame retardancy (UL94 V-0), insulation and chemical-media resistance. Positioned as 'an innovator in integrated application solutions for global liquid-cooling fluid lines', the company addresses industry pain points with its 'rubber-plastic lines + composite quick-install fittings' assembly solution; multiple materials have been the first in China to pass the US UL94 QORU2 (V-0 grade) product certification, with product safety and reliability recognized by international industry standards. In December 2024 the company received a purchase order for 60,000 sets of liquid-cooling line systems for servers; in April 2025 it attended the 2nd NEV Thermal Management Product Smart Manufacturing Supply Chain Innovation Summit and the AI Liquid Cooling Heat Dissipation Summit, focusing on whole-system integrated applications of data-center lifecycle liquid-cooling fluid lines, and extending to liquid-cooling technology innovation applications in energy storage thermal management, military-civilian integration electronics heat dissipation and low-altitude flight.

Flame-retardant UL94 V-0; insulating; chemical-media resistant; first in China to pass the US UL94 QORU2 (V-0 grade) certification; rubber-plastic lines + composite quick-install fitting assembly solution

• Liquid cooling loops for NEV power batteries/motors/motor controllers
• Data-center server liquid cooling lines
• Energy storage thermal management
• Low-altitude aircraft thermal management lines

One of the company's main product series, covering motorcycle-specific fuel hoses, brake hoses and clutch hoses, meeting lightweight requirements and adapting to the installation structures of different vehicle models. The company's products are widely used in automotive, motorcycle and other industries, with stable supply relationships established with many motorcycle manufacturers such as Jianshe, Jianshe Yamaha, Jialing, Jialing Honda, Lifan, Zongshen, Loncin, Dachangjiang and Wuyang-Honda, and entry into the international procurement systems of groups such as Piaggio and Briggs & Stratton.

Motorcycle-specific fuel/brake/clutch hoses; meets lightweight requirements; adapts to the installation structures of different vehicle models

• Motorcycle fuel delivery
• Hydraulic braking
• Clutch actuation
• System line supply