Explore our premium-tier industrial components designed for absolute reliability in heat exchange, filtration, and flow control systems.
Founded in 1988, Ningbo Taojun Refrigeration Equipment Co., Ltd. traces its roots back to the Xiangshan Refrigeration Accessories Factory of Zhejiang University. Over more than three decades of focused growth, we have transformed into a high-tech powerhouse specialized in designing, manufacturing, and servicing critical refrigeration components.
Our leading product range includes high-grade copper filter driers, check valves, air conditioning split service valves, condensers, brass and copper accessories, and specialized HVAC piping. Awarded National High-Tech Enterprise status in 2021, Taojun runs on advanced production engineering, strict ISO 9001:2015 processes, RoHS environmental compliance, and US UL safety credentials.
Through partnerships with industry giants like Haier, Midea, Gree, Whirlpool, Electrolux, and Huarui, our commercial solutions support modern domestic and commercial appliances across Europe, America, Southeast Asia, and the Middle East.
At Taojun, we specialize in manufacturing premium refrigeration components engineered for maximum system protection. Our core copper filter driers are designed to absorb moisture and acids, and to filter out physical impurities that threaten compressor life.
Whether utilized as critical factory-installed components or reliable repair parts for domestic and commercial refrigerators, freezers, and air conditioners, our parts guarantee seamless metallurgical integration, low flow resistance, and long-term durability under high-pressure conditions.
A closer look at our ISO 9001-certified workshops, material handling lines, and precision testing labs.
Discover the engineering principles and manufacturing rigor that elevate our copper pancake tubes and filtration systems above industry standards.
Our core production tools and automated assembly machinery are imported directly from Germany, ensuring sub-micron precision, stable brazing processes, and flawless copper tube bending geometries.
We host 15 dedicated engineering specialists within our corporate technology center. Our R&D framework maintains long-term innovation channels with professors and doctors from the University of Science and Technology of China (USTC) and Zhejiang University.
We provide full design flexibility to meet international specifications. Customized wall thicknesses, custom lengths, specialized connection ends (solder/flare), and customized multi-way shapes are modeled to order.
We utilize ultra-pure C12200 deoxidized high-phosphorus copper (99.9% minimum purity) for superior thermal conductivity and ductility. High-stability liquid crystal spacers, European-formulated bonding adhesives, and specialized desiccants are imported directly from Japan and Europe.
All component designs undergo high & low temperature thermal cycles (75°C to -35°C for 500 hours), thermal shock testing (10°C to 90°C), and damp heat chamber exposure. Completed filter driers are subjected to 24-hour pressure holding and 100V high-voltage insulation tests.
A closer look at how Ningbo Taojun delivers high-performance copper filters and refrigeration accessories to clients worldwide.
As a market-leading supplier of copper components, Taojun guarantees structural integrity and chemical performance across high-pressure environments.
Pioneering the next generation of HVAC refrigeration components to support smart, high-efficiency, and eco-friendly cooling technologies.
Modern HVAC systems are shifting toward natural, low-GWP refrigerants. Our product development roadmap focuses on components capable of managing high operating pressures (especially for sub-critical and transcritical CO2/R744 systems) and ensuring hermetic seals for flammable hydro-carbons like R290.
To maximize heat exchange rates within copper pancake coils, we are implementing high-precision inner-grooved micro-fin geometries. This cross-sectional profile increases the internal surface area, promoting turbulence and raising thermal efficiency by up to 30% without expanding outer dimensions.
Our future-ready copper filter driers will integrate solid-state sensors capable of detecting early moisture breakthrough and pressure differentials. This smart diagnostic capability allows maintenance engineers to replace filter cartridges before compressor damage occurs, lowering operational downtime.
Ningbo Taojun's copper pancake coils, filter driers, and brass connection fittings act as critical components in major industrial, residential, and commercial thermal loops.
High-durability filter driers (10g, 15g, 20g) protect capillary tubes from freezing up or clogging in domestic cooling systems, extending the operational life of household appliances.
Heavy-duty copper equal tees, split service valves, and high-performance vacuum pumps facilitate clean installation, stable vacuuming, and leak-free coolant flow in high-load multi-split commercial buildings.
Vibration-resistant copper filter cartridges and custom heat exchangers ensure stable operations in refrigerated trucks and container ships, safeguarding pharmaceutical and food shipments.
Ningbo Taojun's success is rooted in scientific heritage, collaborative values, and engineering integrity. From our origins in 1988 as Zhejiang University's Xiangshan Refrigeration Accessories Factory, our milestones showcase steady technical growth.
Established as the Xiangshan Refrigeration Accessories Factory of Zhejiang University, setting a strong engineering and academic foundation.
Introduced automated MES intelligent workshop systems to digitalize scheduling, quality tracking, and inventory control.
Strengthened partnerships with global OEMs, shipping high-precision copper components to over 50 countries.
Our corporate values—Honesty, Innovation, Responsibility, and Cooperation—drive our team to deliver high-quality engineering services, keeping our operations agile and prepared for emerging opportunities.
Ningbo Taojun Refrigeration holds full certification under GB/T19001-2016 / ISO 9001:2015 (Registration No.: 41325Q00065R0S), covering the design, development, and manufacture of copper filter driers, condensers, and access valves.
This official certification, audited by Zhongci International and traceable via China's CNCA database, validates our quality management system, ensuring consistent precision for our OEM and ODM partners globally.
Main Certification Document
Detailed Scope of Certification
Operating out of Ningbo's industrial zone, our production lines optimize manufacturing flow to deliver components on time.
Our manufacturing execution system tracks copper purity, dimensions, and testing steps in real time for traceablity.
Equipped with high-speed tube cutting and automated necking machines, our production line handles large-volume orders.
Our on-site testing facilities feature spectrum material analyzers, leak detection systems, and burst testing rigs.
We supply a diverse range of refrigeration components, custom fit for major commercial refrigerator and HVAC models.
Protects ice makers from moisture freeze-ups. Standard sizes and custom lengths available.
Heavy-duty shell thickness with integrated molecular sieve for moisture protection.
Comprehensive selection of elbows, tees, couplings, and customized connector configurations.
Designed for easy brazing onto domestic capillary refrigeration systems.
Dampens compressor vibration and prevents liquid slugging in the suction line.
Optimized shell geometries for specialized medical and laboratory cooling applications.
Corrosion-resistant threaded brass nuts, adapters, and flare caps.
Provides clean coolant charging with minimal pressure drop and leakage protection.
Lightweight liquid refrigerant receiver designed for modern eco-refrigerants.
Alternative lightweight desiccant storage solution with corrosion-resistant finishes.
High mechanical filtration capacity with a solid core desiccant structure.
Dual-entry design to balance pressure distribution in residential heat pumps.
Industry-standard desiccant volumes with tight end connection tolerances.
Our sales network spans major global markets, serving OEM manufacturers across North America, Europe, and Asia.
Key information regarding materials, performance standards, customization options, and ordering logistics.
We manufacture our components using C12200 Deoxidized High Phosphorus Copper (minimum 99.9% Cu purity, 0.015% to 0.040% P). This alloy offers excellent weldability, thermal conductivity, and resistance to hydrogen embrittlement during brazing.
Our quality control protocol includes automated helium leak testing down to a threshold of 1x10^-7 mbar l/s, followed by visual inspection using high-resolution CCD cameras. Our factory defect rate is kept below 0.05%.
Yes. All of our raw materials, brazing materials, and desiccant materials are fully certified under RoHS, REACH, and WEEE standards, ensuring safety and environmental compliance for global markets.
For standard specifications with a minimum order quantity (MOQ) of 500 units, our typical production turnaround is 15 to 20 days. Custom configurations requiring tooling modification may extend the lead time to 30 days.
Browse our selection of service valves, control units, and vacuum pumps engineered for field installations and system maintenance.
Taojun