Engineered to exact OEM specifications, featuring high-purity copper and brass connectors for unmatched system durability.
Ningbo Taojun Refrigeration Equipment Co., Ltd. is located in Xiangshan, Ningbo, a prominent coastal industrial hub in China. Founded in 1988, the company was built upon a bedrock of academic research, originating as the Xiangshan Refrigeration Accessories Factory of Zhejiang University. This core scientific pedigree has fueled our design philosophy for over three decades.
Today, Taojun stands as a comprehensive high-tech enterprise integrating design, advanced R&D, modern manufacturing, global sales, and extensive after-sales support for high-end refrigeration components. Designated as a National High-Tech Enterprise in 2021, the company remains dedicated to metallurgy innovation, process modernization, and the deployment of advanced management frameworks to guarantee zero-defect output.
With strict adherence to international quality systems, our leading products—including copper filter driers, check valves, service split valves, and customized brass connector components—are trusted by global consumer appliance brands like Haier, Midea, Gree, Whirlpool, and Electrolux.
We operate at the intersection of metallurgy and HVAC fluid dynamics. Our copper filter driers are designed specifically to absorb internal moisture and system-born acids, ensuring no solid impurities circulate through cap tubes and compressors.
Leveraging our proprietary 5D Quality System, we maintain a production defect rate of <0.05%. All components are certified according to international benchmarks, having successfully passed:
This relentless dedication to validation ensures that every brass connector, filter drier, and condenser we deliver can withstand the lifetime limits of domestic and industrial cooling systems.
Step inside our high-precision production facility in Ningbo, Zhejiang, where raw copper and brass are processed under rigid automated control.
How our leading-edge brass and copper connectors solve critical HVAC challenges in specific geographic and commercial climates.
Coastal markets face accelerated galvanic and atmospheric corrosion. Taojun's proprietary brass formulations, featuring specialized dezincification resistance (DZR), protect outdoor service valves against salt spray damage in residential split AC units.
At temperatures below -35°C, metal brittleness becomes a structural threat. Our copper filter driers and service valves maintain high impact toughness and strict sealing integrity under constant thermal contraction and vibration cycles.
Large scale liquid chillers operate at intense hydraulic pressures. Our dual gauge valves and high-flow copper pipe joints provide the structural safety margin required for heavy commercial refrigeration, mitigating risks of critical coolant leakage.
Food-grade safety and zero contamination are crucial in hospitality settings. Taojun's desiccant filter driers absorb trace moisture, preventing chemical compound degradation and ice machine compressor freeze-up over long-term operations.
As the global refrigeration industry shifts away from traditional HFCs (hydrofluorocarbons) with high global warming potential (GWP) toward natural alternatives like R290 (propane) and CO2 (R744), the technical demands on connection points have risen exponentially. Natural refrigerants operate at higher pressures and require near-zero permeability to prevent dangerous leaks.
Taojun is at the forefront of this evolution. Our engineering team is currently developing the next generation of low-lead and lead-free alloy connectors to comply with upcoming strict drinking water and environmental standards in Europe and North America.
By integrating advanced finite element analysis (FEA) into our R&D processes, we simulate stress distribution during high-pressure thermal cycling, enabling us to reduce overall material weight while improving burst pressure capabilities.
| Technology Phase | Material Focus | Pressure Limit (Max) |
|---|---|---|
| Legacy Systems (R134a / R410A) | Standard HPb59-1 Brass | 4.5 MPa |
| Current Standard (R32 / R290) | Enhanced DZR Brass / High-Purity Cu | 6.0 MPa |
| Next-Gen Eco Systems (CO2 / R744) | Lead-Free Cu-Fe Alloys / Advanced Seals | 12.0+ MPa |
Why sourcing from Taojun's Ningbo hub ensures supply continuity, price stability, and rapid logistics capabilities.
Located in Zhejiang province, we sit at the center of the world's most dense copper smelting and metal processing cluster. This geographic location allows us to lock in material raw costs and secure direct access to high-purity cathode copper.
Our core manufacturing floor utilizes state-of-the-art tooling imported from Germany. By coupling automation with MES intelligent workshop monitoring, we scale production volume quickly without losing precision.
Our close proximity to the Port of Ningbo-Zhoushan—the world's largest port by cargo throughput—enables direct shipping routes to European, North American, and Southeast Asian distribution hubs with minimized transit times.
Our MES (Manufacturing Execution System) links all steps of our production workflow—from initial brass cutting and hot extrusion to final leak detection. Every batch is cataloged with a unique digital identifier, ensuring complete traceability. If any deviation occurs, our production lines pause automatically, preventing contaminated components from entering final packaging.
For finished products, we perform strict environmental chamber testing. Driers and valves are subjected to thermal shock cycling between 90°C and -35°C, damp heat tests for 500 hours, and 100V electrical diagnostic aging tests. Furthermore, leak testing is performed with ultra-sensitive helium mass spectrometers, securing absolute containment of dangerous refrigerant gases.
From academic foundations at Zhejiang University to a globally recognized OEM manufacturing leader.
Founded as the Xiangshan Refrigeration Accessories Factory of Zhejiang University. Initial work focused on technical research and localized development of thermal management parts.
Relocated to dedicated modern factory buildings in Ningbo, scaling up output of copper filters and valves to meet rising domestic refrigeration demand.
Introduced our MES intelligent workshop management system, transitioning quality control from manual monitoring to automated process auditing.
Incorporated Ningbo Taojun Refrigeration Equipment Co., Ltd. and launched the 'Taojun' commercial brand for condensers, check valves, and specialty fittings.
Awarded National High-Tech Enterprise status, reflecting our focus on metallurgical composition design, advanced brazing technology, and intellectual property development.
Expanded production lines to manufacture low-lead brass fittings and high-pressure components compatible with R290 and CO2 refrigerants.
Verifiable compliance, ISO 9001:2015 registration, and international quality management standards.
Main ISO 9001 Certificate Document
Scope: Filter Driers, Condensers, Access Valves
Juntao Refrigeration (the manufacturing brand of Ningbo Taojun Refrigeration Equipment Co., Ltd.) holds official GB/T19001-2016/ISO9001:2015 certification under registration number 41325Q00065R0S. This registration is fully verifiable via the Certification and Accreditation Administration of the People's Republic of China (CNCA) portal (www.cnca.gov.cn) and our audit partner Zhongci International (www.zcgirz.com).
Our quality system covers the design, machining, welding, and assembly of critical HVAC components. In addition to ISO systems, our products comply with RoHS Directive 2011/65/EU and REACH regulations, guaranteeing that our components are free of hazardous substances and suitable for international consumer appliance integration.
Discover why leading global appliance brands consistently partner with Taojun for their refrigeration components.
Our technical team includes material scientists and engineers specializing in metallurgy and flow dynamics, enabling us to solve complex customer challenges.
Our CNC machining centers maintain linear tolerances to within ±0.02mm, ensuring easy assembly in automated HVAC manufacturing lines.
We customize copper filter driers and service valves for specific application volumes and custom pipe alignments, matching exact project specifications.
Our components are tested in high-voltage and low-temperature environments to verify sealing integrity under harsh climate conditions.
Our technical support team is available to assist partners with product integration and troubleshooting, responding within 8 hours.
Expert technical answers to common queries regarding brass connectors, filter driers, and refrigerant compatibility.
Browse our complete range of split service valves, elbows, equal tees, and brazing materials for global HVAC installations.
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