Engineered to exact OEM configurations with high-purity non-corrosive alloys and advanced molecular filtration cores.
Ningbo Taojun Refrigeration Equipment Co., Ltd., nestled in the scenic tourist hub of Xiangshan, Ningbo, represents decades of manufacturing prowess and technical insight. Founded in 1988, the company inherits the technological legacy of its predecessor, the Xiangshan Refrigeration Accessories Factory of Zhejiang University. Over 30 years of constant R&D transformation has turned us into a comprehensive global enterprise integrating scientific heat-exchanger design, production processes, global distribution, and post-sales technical auditing.
Certified as a National High-Tech Enterprise in 2021, the corporation produces key industrial refrigeration accessories, including filter driers, non-return check valves, service access valves, condenser assemblies, copper/brass adapters, and heavy-duty AC system cable ties. Customer alignment shapes our growth roadmap, pushing us to constantly optimize production efficiency and product life-cycles.
Through our dedicated sub-brand "Lingshan" filters and "Taojun" condensers and stop valves, we have established strategic partnerships with major home appliance enterprises such as Haier, Xinfei, Midea, Gree, Whirlpool, Electrolux, and Huarui. Our distribution network covers major cities in mainland China, and reaches export hubs in Europe, North and South America, Southeast Asia, the Middle East, and Africa.
How Taojun integrates advanced molecular filtration and microchannel thermodynamics to elevate performance and protect compressors.
In modern industrial and domestic refrigeration systems, the condenser acts as the primary heat-rejection interface, while the filter drier functions as the critical filtration system. Even minor contaminants, moisture traces, or acidic residues in the refrigerant cycle can trigger compressor failure, valve corrosion, or capillary tube restrictions. Taojun has spent over three decades refining the structural chemistry and metallurgy of these components to guarantee long-term operational integrity.
Condensers must balance air velocity, pressure drop, and surface-to-volume ratios to maximize heat dissipation. Taojun utilizes advanced microchannel configurations and tube-and-fin architectures that minimize refrigerant charge while boosting heat transfer rates. Our manufacturing lines keep tube wall thickness tolerances within tight margins, ensuring stable pressure resistance under high-operating conditions (such as R410a, R32, or R290 systems).
Copper filter driers must be designed to absorb moisture and acids, while filtering out physical particulates. Taojun’s components use high-purity copper shells (rust-resistant and pressure-tight) coupled with a premium internal desiccant core. By combining a 3A Molecular Sieve (achieving water absorption ≥ 20%) with an activated carbon layer, the drier traps water molecules without adsorbing the refrigerant itself, preventing system freezing and capillary blockage.
Pioneering green thermal solutions that adapt to evolving global F-gas regulations and carbon neutral initiatives.
As the international HVAC/R sector transitions away from high Global Warming Potential (GWP) hydrofluorocarbons (HFCs), component manufacturers must innovate to support alternative natural refrigerants. Fluids like R290 (propane), R744 (CO2), and R32 demand changes in compressor performance, pressure integrity, and material safety.
Propane (R290) requires low system charge limits due to flammability concerns, calling for low-volume, high-efficiency heat exchangers. Taojun's R&D department is designing micro-channel condenser surfaces that maintain high performance while reducing the internal volume by up to 40%. For CO2 (R744) applications, our copper and brass fittings are engineered to withstand higher trans-critical pressures (exceeding 120 bar) without joint degradation.
Sustainability runs throughout the life-cycle of our products. Our factory uses 100% recyclable lead-free copper alloys and has phased out volatile organic compound (VOC) cleaning solvents. Instead, we use ultrasonic aqueous cleaning lines to prep copper tubing before brazing. By aligning with EU RoHS, REACH, and WEEE directives, Taojun components simplify compliant product design for major global brands.
Fully integrated CNC machining and tube bending lines equipped with automated calibration sensors.
Robot-assisted argon arc welding and continuous furnace brazing lines ensure tight sealing joints.
Helium mass spectrometer leak testing and environmental simulation chambers verify performance.
How Taojun leverages advanced German automated machinery, ERP scheduling, and strategic location logistics.
In global manufacturing, supply chain agility and cost predictability are key commercial assets. Operating from our manufacturing base in Xiangshan, Ningbo, Taojun combines localized raw material sourcing with advanced production automation to buffer global clients against market fluctuations.
Taojun’s factory runs on a Manufacturing Execution System (MES) implemented in 2008. By integrating MES with real-time Enterprise Resource Planning (ERP), we track every production batch from raw copper ingot processing to automated packaging. Core manufacturing equipment is sourced directly from Germany, allowing for high repeatability and dimensional precision, with pipe-end shaping and brazed joint tolerances kept under ±0.02 mm.
Our location in Ningbo provides direct transport access to the Port of Ningbo-Zhoushan, one of the world's busiest container hubs. This local infrastructure helps reduce transit times, shipping rates, and storage overhead for our overseas partners. Additionally, our raw materials (including high-density copper coil, Japanese-certified ITO films, and European sealing adhesives) are managed via a buffer-stock system, securing steady production runs even during peak seasons.
Establishment of the Xiangshan facility, laying down dedicated lines for domestic cooling component manufacturing.
Introduction of digital manufacturing practices and our MES intelligent workshop management system.
Expanding production to support natural refrigerants (R290/CO2) and sustainable smart cooling parts.
Every component is subjected to severe thermal, mechanical, and pressure tests to guarantee field safety and compliance.
Our quality assurance program is built on structural testing protocols designed to simulate years of harsh field operation. Taojun's 5D Quality Management System covers raw material validation, mid-process inspection, finished component pressure testing, and final helium leak auditing.
Finished filter driers and condensers undergo severe environment simulation. These include: High & low temperature testing at 75°C and -35°C for 500 consecutive hours; thermal shock cycles between 10°C and 90°C for 30 minutes; and damp heat trials for 500 hours. To prevent chemical contamination, moisture is extracted via high-temp vacuum baking ovens, while smart film assemblies undergo 24-hour electrical aging and 100V high-voltage breakdowns to ensure insulation integrity.
Certified Quality System covering the Design and Manufacturing of filter driers, condenser coils, and brass access valve components (Reg No: 41325Q00065R0S).
Verifiable credentials registered under CNCA (www.cnca.gov.cn) and verified through Zhongci International (www.zcgirz.com) for international compliance.
Empowering cooling infrastructure via value-driven partnerships, innovation, and global compliance.
At Taojun, we believe industrial success is built on four core values: Honesty, Innovation, Responsibility, and Cooperation. Honesty acts as our foundation, ensuring clear communication, quality manufacturing, and a dependable reputation. Innovation drives our technical advancement, keeping our engineering processes aligned with changing market dynamics. Responsibility fuels our long-term commitment to product quality, and Cooperation guides our partnerships, helping us align our expertise with our customers' goals.
Engineering responses to common technical questions raised by refrigeration system designers and procurement managers.
Discover our range of highly reliable, pressure-tested control valves, contactors, and copper fittings.
Explore specialized industrial desiccant filtration and connection accessories manufactured in our ISO 9001 facility.
Connect directly with our engineering department to secure OEM component layout and optimize project logistics.
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