Explore our primary selection of high-durability copper fittings, bundy tubes, brazing materials, and core thermal components engineered to meet stringent global standards.
Established in 1988 as the Xiangshan Refrigeration Accessories Factory of Zhejiang University, Ningbo Taojun Refrigeration Equipment Co., Ltd. has developed over three decades into a leading authority in the design, optimization, and mass production of advanced refrigeration accessories. Our core product lines—including specialized filter driers, check valves, service access valves, condenser systems, high-purity brass/copper U-bends, and thermal insulation solutions—form the foundation of reliable cooling circuits worldwide.
In 2012, we introduced our flagship "Taojun" brand to meet the stringent technical demands of the global market. Today, Taojun acts as a key OEM/ODM manufacturing partner for household and commercial appliance brands, including Haier, Midea, Gree, Whirlpool, Electrolux, and Huarui. Recognized as a National High-Tech Enterprise in 2021, our facilities combine raw material integration with advanced metallurgical engineering to serve clients across Europe, the Americas, Asia-Pacific, and the Middle East.
A strategic overview of technical requirements, compliance pathways, and manufacturing innovations defining next-generation cooling systems.
Navigating global compliance is critical for tier-one HVAC/R supply chains. Our products carry UL certification for North America, CE compliance for Europe, and meet the strict environmental mandates of RoHS, REACH, and WEEE. These standards ensure that all chemical compositions, copper purity, and desiccant materials remain safe and fully recyclable.
Operating from Ningbo, Zhejiang Province, our manufacturing center benefits from a dense industrial cluster. This provides reliable sourcing of high-purity copper cathodes, specialized aluminum alloys, and performance desiccants. The proximity to Ningbo and Shanghai ports ensures streamlined global logistics and stable pricing.
Modern HVAC/R systems are shifting toward eco-friendly refrigerants such as R32, R290, and subcritical CO2 (R744). These refrigerants operate under high working pressures and have high chemical sensitivity. This requires moisture filtration and joints that are certified leak-free up to 500 PSI.
Our manufacturing philosophy focuses on strict tolerances and material cleanliness. Standard refrigeration copper tubing is processed according to ASTM B280 and EN 12735-1 specifications. This guarantees a clean, dry, and capped inner surface that prevents oil contamination and capillary blockages in the system. The copper used in our filter driers, U-bends, and capillary lines has a minimum purity of 99.9% (C12200, phosphorus-deoxidized copper), which provides excellent corrosion resistance and weldability.
Furthermore, our roll-bonded aluminum evaporators and heat exchangers utilize precise foil-thickness controls (with tolerances within ±0.02 mm) to maximize thermal transfer efficiency. This capability is critical for commercial cooling systems, medical cold storage, and energy-efficient heat pumps that target strict SEER ratings.
Every batch of copper filter driers, charging access valves, and condensers goes through a comprehensive series of quality checks to ensure long-term performance.
Finished components undergo continuous thermal testing for 500 hours in temperatures ranging from -35°C to 75°C. In addition, they are subjected to rapid thermal shock cycles from 10°C to 90°C to simulate real-world operations in harsh climates.
To support high-pressure refrigerants, we utilize automated helium mass spectrometer leak detection. This process verifies that all seams, argon-arc joints, and cap brazes exhibit a leak rate of less than 1x10-8 mbar·l/s.
Our filter driers contain high-capacity 3A molecular sieves combined with an activated alumina core. This structure provides water adsorption capacity of at least 20% while filtering out harmful organic acids, protecting the compressor motor winding insulation.
Ningbo Taojun Refrigeration Equipment Co., Ltd. operates under a certified quality management system registered under number 41325Q00065R0S. This registration is issued by Zhongci International and is fully verifiable on the official Certification and Accreditation Administration of China (CNCA) portal (www.cnca.gov.cn).
This certification covers our design, development, production, and service validation operations. It ensures that every copper accumulator, condenser assembly, charging valve, and customized refrigeration fitting complies with both international trade laws and technical design specifications requested by our clients.
Our components are designed to perform reliably across a wide range of cooling applications, maintaining efficiency from domestic setups to industrial systems.
Discover our additional range of brass fittings, copper accumulators, charging accessories, mounting brackets, and specialized refrigeration hardware.
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