Explore our foundational range of highly calibrated copper, brass, and aluminum components engineered for demanding industrial operations.
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. The company's leading products include: filter driers, check valves, air conditioning valves, condensers, brass and copper accessories, air conditioning cable ties and other refrigeration accessories series products.
After 30 years of hard work and rapid development, it has now become a comprehensive enterprise integrating the design and development, production and sales, and after-sales service of refrigeration accessories. In 2021, it became a national high-tech enterprise. Our company is committed to technological and process innovation, equipment improvement, and the introduction of advanced management concepts to produce first-class products. Customer satisfaction is our unwavering pursuit. With reasonable design, reliable quality, and perfect after-sales service, the "Lingshan" filter has become a well-known brand in the domestic refrigeration industry.
The company has successively passed ISO9001:2008 quality management system certification, EU ROHS environmental protection directive certification, and US UL certification. The company always takes customer needs as the basis and continuously innovates management concepts to ensure efficient and stable development.
In 2012, Ningbo Taojun Refrigeration Equipment Co., Ltd. was established, creating the brand "Taojun" condensers, "Taojun" stop valves and other series of products. Over the years, it has established partnerships with well-known domestic and foreign home appliance enterprises such as Haier, Xinfei, Midea, Gree, Whirlpool, Electrolux, and Huarui. The product sales network covers major and medium-sized cities in China and is exported to Europe, America, South America, Southeast Asia, the Middle East, Africa and other overseas markets. The company's goal is to support and cooperate with every sincere customer to achieve a win-win situation.
Leveraging state-of-the-art physics and manufacturing techniques to support commercial and domestic HVAC systems globally.
Taojun is specialized in refrigeration parts for 38 years. Our premium filter driers, access valves, and condensers are engineered specifically to absorb moisture and acid, and to filter out system impurities. They are routinely installed as critical components or replaced as premium repair parts for both domestic and commercial refrigerators, freezers, and heat pump systems.
Constructed utilizing high purity copper piping ensuring maximum rust resistance, structural integrity, and high-pressure tolerance in heavy duty refrigeration cycles.
Integrates 3A molecular sieves providing water absorption capacities exceeding 20%, reinforced by an activated carbon layer to sequester dangerous acids.
Utilizes precision argon arc welding processes to guarantee absolute, hermetic sealing across variable pressure differentials, resulting in zero refrigerant leakage.
We blend university-backed R&D with advanced German machinery to deliver unmatched performance indicators.
Our core production lines and automated manufacturing units are imported directly from Germany to preserve tolerance accuracy down to micrometers.
We host 15 dedicated research engineers in our R&D center, consisting of doctors and professors collaborating directly with the University of Science and Technology of China.
We customize sizes, wall thicknesses, shapes, and structural integrations. We turn custom conceptual parameters into highly optimized HVAC components.
Our ITO film (no shrinkage, zero color difference) and liquid crystal spacer are imported from Japan; custom high-performance glue is sourced from Europe. Liquid crystal displays optimal temperature ranges up to 70°C and protective films withstand 80-90°C.
Subjected to high & low temperature chambers (75°C to -35°C for 500 hours), thermal shock cycles (10°C-90°C for 30 minutes), and damp heat exposure for 500 hours. Electronic sheets undergo a 24-hour aging process, with rolls verified at 100V high voltage for zero breakdown.
Maintaining ±0.02mm aluminum foil tolerances and delivering products structurally validated for a 10-year service life under standard field operating stress.
An in-depth look into thermodynamic optimization, compliance pathways, and the global supply chain landscape.
Modern global energy directives are rapidly phasing out high-GWP (Global Warming Potential) fluorocarbons in favor of natural alternatives like R290 (propane), R32, and carbon dioxide (R744). These eco-friendly refrigerants operate under markedly higher pressures and require tighter volumetric control. Consequently, capillary copper tubes must demonstrate significantly improved tensile strength and immaculate internal surface finishes. Undulations or micron-scale roughness inside the capillary wall can generate turbulent flow disturbances, resulting in erratic expansion cycles and reduced Coefficient of Performance (COP) in compressors.
We employ C12200 phosphorus-deoxidized copper (with minimum 99.9% Cu content and 0.015-0.040% phosphorus) to ensure optimized weldability, thermodynamic resilience, and corrosion mitigation against hydrogen embrittlement.
As manufacturers strive to design compact, high-efficiency refrigeration units, micro-channel heat exchangers have become the industry standard. This architecture demands capillary tubing with ultra-small outer diameters (down to 1.2mm) and precise wall thickness consistency (tolerances strictly within ±0.01mm). Precision extrusion and cold-drawing processes are the only ways to guarantee uniform fluid velocity and prevent premature flashing of liquid refrigerant before it enters the evaporator coil.
LME (London Metal Exchange) copper price fluctuations present major financial risks for global HVAC/R procurement teams. Original Equipment Manufacturers (OEMs) require suppliers that offer flexible pricing agreements, volume hedging options, and stable lead times. By leveraging our domestic supply chains in Zhejiang and utilizing intelligent MES (Manufacturing Execution System) warehouse automation, Ningbo Taojun ensures high throughput rates, predictable lead times, and optimized material utilization to shield partners from market volatility.
Refrigeration systems are highly integrated environments where a failure in one component propagates downstream. A capillary tube mismatch can lead to liquid slugging at the compressor inlet, destroying valves and bearings.
At Taojun, we provide complete, integrated capillary and throttling assemblies. By supplying paired capillary-filter drier modules, we ensure that desiccant performance is perfectly calibrated to the specific flow volume and expansion coefficient of the capillary copper channel. Our systems prevent capillary freeze-up, a common issue caused by moisture contamination where trace water vapor freezes at the capillary exit, blocking refrigerant flow and causing system failure.
Direct alignment with REACH, RoHS, WEEE, and UL standards for seamless customs clearance and target market integration.
MES digital tracking logs raw material batch numbers and records helium mass spectrometer leak tests for every single component.
72-hour delivery options, consolidated global container shipping, and low 500-unit MOQs for custom prototype fabrication.
Tracing our evolution from a specialized university workshop into an international manufacturing enterprise.
Building our foundational manufacturing plant, transitioning from our academic origins at Zhejiang University.
Deployment of the MES intelligent workshop management system, securing digital quality control across production lines.
Consolidating high-tech partnerships with Haier, Midea, Whirlpool, and expanding carbon-neutral manufacturing models globally.
Honesty: Integrity management, quality utmost, and a solid reputation have established our competitive edge.
Innovation: Innovation leads to growth. We constantly refine concepts, engineering mechanisms, technology, and management models to stay prepared for emerging industry opportunities.
Responsibility: We maintain a strong sense of responsibility toward our clients, society, and the global environment.
Cooperation: Working together to create win-win situations. We integrate global resources to let professional teams apply their engineering specialties.
Our products are integrated into demanding applications worldwide. View our high-tech workshop environments.
Fully automated, real-time process monitoring ensures micro-dimensional tracking for capillary drawing and cutting.
Equipped with imported German rotary swaging and high-speed cold-drawing machinery for high-precision components.
Helium mass spectrometry leak detection and structural stress-cycle test stands ensure maximum reliability.
Juntao Refrigeration (Ningbo Taojun Refrigeration Equipment Co., Ltd.) maintains strict quality management controls. Our facility is certified to GB/T19001-2016 / ISO9001:2015 (Registration No.: 41325Q00065R0S).
Our certifications are fully verified by China’s CNCA (www.cnca.gov.cn) and our audit partner Zhongci International (www.zcgirz.com). This structured quality framework guarantees repeatable manufacturing tolerances for filter driers, condensers, and access valves.
In addition to ISO 9001, our products align with the EU RoHS environmental directive, REACH guidelines, and carry US UL certification for electrical and high-pressure safety. This comprehensive compliance framework ensures smooth integration into your supply chain.
Quality Certificate
Detailed Audited Scope
From initial design calculations to lifetime engineering assistance, we protect your systems and supply chain.
Our sales engineers offer direct consultations backed by 15 years of technical pumps and HVAC system design experience. We review flow calculations and cross-reference material compatibility to optimize component performance before manufacturing starts.
We provide 24/7 technical hotline access for project engineers. Every inquiry receives a detailed technical response within 8 hours, minimizing downtime and keeping your development projects on schedule.
All products are covered by a comprehensive 1-year warranty. We offer free lifetime technical support, on-site system diagnostics support, and direct collaboration to continually improve product quality based on field feedback.
Our vision for sustainable materials, automated quality control, and clean manufacturing initiatives.
As the heating, ventilation, air conditioning, and refrigeration (HVAC/R) industry works toward carbon neutrality, the design requirements for flow control components are changing rapidly. Taojun Refrigeration is addressing these changes through three core technological initiatives:
Technical and procurement answers directly from our engineering team.
Complete your HVAC/R builds with our certified condensers, drying filters, couplers, and heavy-duty valves.
Taojun
