Explore our premium line of high-durability compressors, filter driers, copper accumulators, and heavy-duty valves manufactured to strict ISO 9001 and UL standards.
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 the span of three decades, our company's leading products have expanded to include high-integrity filter driers, check valves, air conditioning valves, condensers, brass and copper accessories, air conditioning cable ties, and an array of critical refrigeration components.
After 30 years of hard work and rapid development, it has now become a comprehensive enterprise integrating the design, development, production, sales, and after-sales service of refrigeration accessories. In 2021, Taojun proudly attained the status of a National High-Tech Enterprise. We are continuously committed to technological and process innovation, equipment upgrades, and the integration of advanced digital management concepts to produce world-class products. Customer satisfaction remains our unwavering pursuit.
With reasonable structural designs, reliable quality, and perfect after-sales service, our proprietary "Lingshan" filter line has become a well-known brand in the domestic refrigeration sector. The company has successively passed ISO9001:2008 / ISO9001:2015 quality management system certification, EU ROHS environmental protection directive certification, and US UL certification, ensuring stable, compliant, and highly efficient operation.
In 2012, Ningbo Taojun Refrigeration Equipment Co., Ltd. officially established its export wing, creating the globally trusted brand "Taojun" for condensers, stop valves, and copper/brass fittings. Over the years, we have forged strategic long-term partnerships with leading domestic and international home appliance enterprises, including Haier, Xinfei, Midea, Gree, Whirlpool, Electrolux, and Huarui.
Today, our product sales network spans major and medium-sized cities in China, while reaching overseas markets across Europe, North America, South America, Southeast Asia, the Middle East, and Africa. We design with the ultimate goal of driving value for every partner, building a collaborative framework to achieve mutual profitability in the competitive refrigeration market.
An in-depth analysis of the technological and macroeconomic factors reshaping the modern HVAC/R connection landscape.
In modern industrial and commercial refrigeration, the reliability of joints, valves, and distribution manifolds is paramount. The shift toward natural refrigerants, such as Carbon Dioxide (CO2 / R744) and Propane (R290), demands components that can withstand significantly higher working pressures and extreme thermal cycles. High-grade brass and copper alloy connectors play a crucial role here, providing the optimal balance of ductility, corrosion resistance, and thermal conductivity required to prevent micro-leakages.
Ningbo Taojun Refrigeration leverages custom metallurgical formulations (specifically low-lead and lead-free brass compliance profiles) to design fittings capable of sustaining operating pressures upwards of 500 PSI (34.5 Bar) without structural deformation. This makes our brass and copper accessories ideal for commercial cold rooms, supermarket display cases, and industrial chillers.
Global regulatory bodies, including the European Chemicals Agency (ECHA) and the US Environmental Protection Agency (EPA), are constantly tightening standards for material safety. Compliance with the Restriction of Hazardous Substances (RoHS) and REACH directives has forced manufacturers to move away from traditional leaded alloys. Our advanced chemical testing procedures ensure that every brass connector, charging valve, and fitting shipped complies fully with the latest international environment standards, securing smooth import processes for our global buyers.
We specialize in engineering and manufacturing high-performance refrigeration parts, copper filter driers, access valves, and tube condensers.
Engineered to absorb moisture and acids, filtering out micro-scale impurities in home refrigerators and commercial refrigeration lines. High-purity copper shells shield the 3A molecular sieve and activated carbon core, ensuring long-lasting moisture removal.
High-precision charging valves and brass adapters featuring multi-layered seals. Rated to handle refrigerants from R22 and R134a to R410a systems, ensuring zero refrigerant leakage during maintenance and charging.
Custom-engineered finned tube and wire condensers designed for optimized heat exchange performance. Engineered with precision tube spacing to ensure high thermal efficiency for commercial freezers and ice makers.
Unlocking competitive advantages through advanced engineering, global certifications, and strict multi-phase quality control.
Our core high-precision CNC machining and copper extrusion equipment is imported directly from Germany to guarantee sub-micron accuracy on thread dimensions and valve seats.
We house 15 dedicated engineers within our R&D center, leveraging collaboration with professors and PhDs from the University of Science and Technology of China (USTC) to pioneer advanced thermodynamic solutions.
We design and manufacture custom sizes, lengths, thread profiles, and materials to integrate seamlessly into your specialized refrigeration configurations. MOQ starts as low as 500 units.
Our ITO film (no shrinkage, zero color difference) and liquid crystal spacers (excellent uniformity) are sourced from Japan; high-bonding glues are imported from Europe; liquid crystal temperature threshold limits span up to 70°C, and protective films resist thermal spikes of 80-90°C.
We run thermal chamber tests at 75°C and -35°C for 500 hours; thermal shock cycles from 10°C to 90°C for 30 minutes; damp heat humidity testing for 500 hours. Moisture is completely eliminated via high-temperature industrial ovens. Smart film sheets undergo a 24-hour continuous aging run and are roll-tested at 100V high-voltage parameters to prevent electrical breakdown.
Developing robust refrigeration parts for 41 years. We have domestic leading research and development abilities, paired with state-of-the-art laboratory testing.
High-purity copper and brass pipes offer excellent resistance to rust and high pressure, shielding internal filtration materials from environmental corrosion.
Combines a premium 3A molecular sieve (delivering water absorption capacity ≥20%) and an activated carbon layer to adsorb moisture and neutralize harmful acids.
Sealed using advanced argon arc welding processes to guarantee consistent joint thickness, preventing the structural micro-voids that lead to refrigerant leaks.
Minimizes the moisture and acid exposure within the compressor, preventing internal oxidation and copper-plating effects to ensure smooth operation over a 10-year lifespan.
Tracing our journey from a specialized university workshop into an international high-tech manufacturing leader.
Establishment of our dedicated manufacturing facilities in Xiangshan, Ningbo, scaling up mass production for domestic appliance brands.
Implementation of the MES intelligent workshop management system, transitioning the production plant to data-driven automated fabrication.
Expansion of overseas high-tech product export divisions, enhancing support for green natural refrigerants (R290, CO2) and smart IoT valve controllers.
Building a global brand powered by honesty, innovative technology, social responsibility, and international cooperation.
Honesty: We adhere to the core principles of people-oriented management, integrity in operations, and prioritizing quality above all else. This builds the real foundation of our competitive edge.
Innovation: Innovation is the very essence of our corporate culture. It drives our ongoing development, guiding technological upgrades, production concepts, and operational management. This ensures our enterprise is always prepared for emerging global opportunities.
Responsibility: We maintain a deep sense of mission and responsibility toward our global clients and the environment, focusing on eco-friendly packaging and reduced greenhouse emissions.
Cooperation: By integrating international resources, we aim to build a collaborative ecosystem where specialized engineers and developers can bring their talents to the global market.
Our brass connectors, filter driers, and valves are engineered for versatile deployment across diverse commercial and industrial setups.
Providing low-volume copper filter driers and micro-channel condensers that maintain tight systems inside household fridges, avoiding moisture build-up.
High-capacity desiccant core filter driers and safety access valves installed in supermarket cold rooms and walk-in freezers to ensure constant low temperatures.
Premium brass connectors and service charging ports designed to withstand the vibration, shock, and temperature shifts common to vehicular HVAC units.
Ensuring end-to-end supply chain reliability, from initial design consultation to lifetime technical support.
Get professional support from sales engineers with over 15 years of technical experience. We respond to inquiries in under 8 hours and provide detailed CAD designs.
We provide comprehensive installation manuals, troubleshooting procedures, and a one-year structural warranty, alongside free lifetime technical assistance.
With a distribution network covering over 50 countries, we offer customized freight solutions, priority customs clearance support, and transparent tracking.
Ningbo Taojun Refrigeration Equipment Co., Ltd. (operating globally under the brand Juntao Refrigeration) maintains strict quality compliance across its design and manufacturing operations. Officially certified with GB/T19001-2016/ISO9001:2015 standards (Registration No.: 41325Q00065R0S), we guarantee verifiable product reliability.
ISO 9001 Certificate
Verification Scope
UL Certificate
RoHS Certified
Step inside our production floors and testing laboratories to see how we maintain consistent quality.
Pioneering sustainable, low-carbon solutions for next-generation cooling systems.
By 2026, Taojun plans to shift 100% of our brass connector production to lead-free copper alloys (C46400/C68700 base), aligning with stringent European drinking water and California Prop 65 requirements. This ensures our clients remain compliant with future environment laws.
With R290 (Propane) and R744 (CO2) gaining traction globally, we are developing a new line of triple-sealed mechanical expansion joints. These are rated for extreme pressures (up to 90 Bar / 1300 PSI), ensuring safe, durable performance under demanding conditions.
We are currently developing smart solenoid control valves with built-in sensors. These monitor refrigerant flow rates and pressure fluctuations in real-time, sending diagnostic reports directly to central HVAC controllers via Modbus or Bluetooth protocols.
Find quick answers to common questions about our products, certification, materials, and ordering procedures.
We primarily utilize high-grade HPb59-1 brass and C3771 hot forging brass, along with high-purity C12200 phosphorus deoxidized copper tubes. These materials offer excellent corrosion resistance, reliable brazing properties, and can easily withstand high operational pressures. We also offer lead-free brass formulations to comply with specific regional regulations.
Our standard access valves and triple-sealed charging valves are rated for up to 500 PSI (34.5 Bar) working pressure, making them fully compatible with standard R22, R134a, and R410a systems. For high-pressure CO2 applications, we provide custom-engineered models rated up to 1300 PSI.
Our filter driers feature a premium 3A molecular sieve desiccant that selectively adsorbs water molecules while leaving the refrigerant and compressor oil untouched. This keeps moisture content in the system below 10 ppm, preventing acid formation and freezing issues at expansion valves.
Yes. Ningbo Taojun holds official ISO 9001:2015 Quality Management certification, EU RoHS/REACH environmental compliance reports, and UL safety certification for mechanical pressure safety. This ensures our products meet the required import standards for both regions.
Our standard MOQ is 500 units per specification for custom OEM brass fittings and filter driers. Standard catalog products can be shipped faster. Production lead times range from 15 to 30 days depending on order size and custom requirements, with global air freight options available for urgent orders.
Browse our selection of electrical components, control systems, access valves, evaporators, and condensers.
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