Explore our advanced OEM/ODM collection of high-performance cooling accessories, filters, and valves.
Ningbo Taojun Refrigeration Equipment Co., Ltd. is located in Xiangshan, Ningbo, a beautiful tourist city. Founded in 1988, its predecessor was Xiangshan Refrigeration Accessories Factory of Zhejiang University. Over more than 35 years of engineering experience and development, we have transitioned into a national high-tech enterprise.
Our leading product lines consist of: filter driers, check valves, air conditioning valves, copper condensers, brass and copper accessories, air conditioning cable ties, and other refrigeration accessories series products. By incorporating advanced academic research and cutting-edge production concepts, the "Lingshan" filter and "Taojun" brand components have become benchmarks of reliable quality in the global HVAC market.
The company has successively passed ISO9001:2008 / GB/T19001-2016 quality management system certification, EU ROHS environmental protection directive certification, and US UL certification.
Taojun is specialized in refrigeration parts for 38 years. Our core competency lies in producing elite copper filter driers, access valves, and condensers.
Feature: TAOJUN copper filter driers are designed to absorb moisture and acid, and to filter out system impurities. Typically, they are installed as primary components or replaced as standard repair parts for both domestic and commercial refrigerators, freezers, and air conditioners, safeguarding compressors from damage.
Addressing the shifting paradigm in thermodynamic systems, environmental compliance, and microchannel efficiency.
The global commercial refrigeration and air conditioning industry is undergoing a critical transition. With the implementation of the Kigali Amendment and increasingly strict local limits on energy use, thermal efficiency has shifted from a margin metric to a key design requirement. High-purity copper tube condensers remain the core technology for high-efficiency heat exchangers. Copper's superior thermal conductivity (approximately 401 W/m·K) provides faster heat transfer rates compared to aluminum alternatives, allowing system engineers to reduce unit size while maintaining high efficiency.
As factories search for the best copper condenser suppliers in China, quality verification has become more complex. Manufacturers must optimize coil designs to handle new low-GWP (Global Warming Potential) refrigerants like R290 (Propane), CO2 (R744), and HFO blends. These require higher operating pressures and clean internal tubing. Ningbo Taojun addresses these needs by combining scientific research with clean, high-precision automated manufacturing.
Internally grooved copper tubing increases the internal surface area, disrupting laminar boundary layers to boost heat transfer efficiency by up to 30% compared to smooth bore tubes.
Automated argon arc and orbital welding systems ensure leak-free joints, capable of withstanding the high operating pressures required by R410A and R744 (CO2) systems.
Advanced outer surface treatments, including cathodic electrodeposition (CED) epoxy coatings, protect copper-aluminum interfaces from galvanic corrosion in harsh coastal environments.
38 years of quality manufacturing verified by strict testing and collaboration with Zhejiang University.
Our core production equipment is imported directly from Germany, ensuring precise fin spacing, copper tube expansion tolerances within ±0.02mm, and uniform bends that minimize pressure drops.
We work in partnership with professors and engineers from the University of Science and Technology of China and Zhejiang University. Our R&D center is staffed by 15 engineers dedicated to thermodynamics optimization.
We design custom shape configurations, physical dimensions, and thermodynamic specs. Taojun supplies tailored solutions to fit the space limitations of diverse commercial and domestic appliances.
We source only high-purity deoxidized copper. For our specialized components, ITO film (no shrinkage or color difference) and liquid crystal spacers are sourced directly from Japan, and high-temp resistant protective films handle 80-90°C environment profiles.
Finished goods undergo strict environmental endurance tests: 500 hours at 75°C to -35°C, thermal shock testing from 10°C to 90°C for 30-minute intervals, damp heat evaluation, high-voltage insulation tests up to 100V, and 100% helium mass spectrometer leak detection.
We supply refrigeration components to major global brands, including Haier, Midea, Gree, Whirlpool, Electrolux, and Huarui, proving our reliability in high-volume supply chains.
The structural layout of Taojun's high-purity copper filter driers and heat exchange elements.
Inside our ISO 9001-certified factory in Ningbo, Zhejiang.
Milestones of progress from a localized workshop to a national high-tech manufacturing leader.
Established as Xiangshan Refrigeration Accessories Factory of Zhejiang University. Built the initial foundation of copper extrusion, tube bending, and accessory design.
Established Ningbo Taojun Refrigeration Equipment Co., Ltd. Developed brand lines for condensers and stop valves. Implemented the MES workshop management system and upgraded quality controls.
Certified as a national high-tech enterprise. Expanded product exports to over 50 countries, securing long-term OEM contracts with tier-1 appliance manufacturers globally.
A global brand supported by integrity, technological innovation, and cooperation.
We believe a brand's long-term success is built on its corporate culture. This culture is shaped by the shared principles of our workforce: Honesty, Innovation, Responsibility, and Cooperation.
Taojun components are designed for a variety of refrigeration and thermodynamic systems.
Sized copper filter driers protect small hermetic systems from moisture, preventing capillary blockages and maintaining refrigeration cycles in home appliances.
Heavy-duty copper filters and condensers maintain steady temperatures in supermarkets and industrial ice machines, reducing energy consumption and system downtime.
Our vibration-resistant condensers, U-bend fittings, and charging accessories protect automotive AC lines and residential heat pumps against leak risks.
Verifiable ISO 9001:2015, UL, RoHS, and environmental management registrations.
Ningbo Taojun Refrigeration operates under standard compliance frameworks. Our manufacturing facility in Zhejiang is registered under GB/T19001-2016/ISO9001:2015 (Registration No.: 41325Q00065R0S). This registration applies to our quality assurance policies across the design, production, and inspection phases for copper filter driers, condenser coils, and access valves.
Our certifications are verifiable via China’s National Certification and Accreditation Administration (CNCA) portal (www.cnca.gov.cn) and our auditing partner, Zhongci International (www.zcgirz.com). This provides global procurement teams with verifiable proof of our manufacturing standards.
Technical guidance for global refrigeration engineers and HVAC procurement teams.
We source deoxidized high-phosphorus copper (C12200, DHP grade) with copper content ≥ 99.9%. This material provides clean internal walls and excellent brazing characteristics, which helps prevent leakage at system connections.
Yes. Our components are designed to handle pressure ranges of up to 4.5 MPa, making them suitable for natural refrigerants like R290 and R600a, as well as sub-critical CO2 applications.
Our manufacturing lines include a continuous vacuum drying process. After assembly and ultrasonic cleaning, filter drier cores are sealed under dry nitrogen gas to prevent moisture intake before installation.
Initial engineering drawings and performance evaluations are typically shared within 72 hours. Prototype fabrication takes 7 to 10 working days, and mass production runs are completed in 20 to 30 days depending on raw material profiles.
Yes. All shipments include test reports, material certificates, and ISO/UL/RoHS compliance sheets. We work with international shipping agents to manage delivery requirements for Europe, the Americas, and Southeast Asia.
Explore our selections of capillary tubes, fittings, filter driers, and supporting mechanical hardware.
Taojun