Explore our high-precision refrigeration accessories, featuring advanced copper filter driers, condenser setups, and system-protection equipment designed for global OEMs.
Ningbo Taojun Refrigeration Equipment Co., Ltd. is located in Xiangshan, Ningbo, a prominent center for advanced industrial manufacturing and global trade logistics. Founded in 1988, our enterprise's technical foundation trace back to the prestigious Xiangshan Refrigeration Accessories Factory of Zhejiang University, ensuring that scientific rigor and engineering excellence have been embedded in our operations since day one.
Over the past three decades, we have evolved into a national high-tech enterprise (certified in 2021) that seamlessly integrates R&D, advanced manufacturing, domestic distribution, and international export operations. Our leading brand, "Lingshan", has earned industry-wide acclaim for providing robust refrigeration components. Our current product portfolio is vast, spanning high-capacity copper filter driers, stop valves, check valves, condenser systems, high-conductivity brass accessories, and heavy-duty AC binding tapes.
We operate in strict adherence to global regulatory and quality frameworks, possessing certifications for ISO 9001:2015, the European Union RoHS Directive, and United States UL listing. This robust certification foundation ensures our products reliably meet the exacting standards of both high-volume domestic home appliance manufacturers and international industrial HVAC engineering enterprises.
Leveraging industrial intelligence, strict material selection, and rigorous verification systems to deliver zero-defect fluid control devices.
Our core production and forming lines are imported directly from Germany, ensuring precise metal forming, consistent dimensional tolerances, and high structural reliability across production runs.
Our centralized technology team boasts 15 expert engineers, including doctors and researchers with academic ties to the University of Science and Technology of China, steering our continuous intellectual property development.
We provide full-service customization for copper filter driers, receivers, and piping modules. From geometry modifications to custom desiccant ratios, we align with your specific system configurations.
Our critical materials—such as high-uniformity liquid crystal spacers, protective high-temperature films, and premium molecular sieves—are sourced directly from trusted Japanese and European supply channels.
Every design undergoes intensive validation: 500-hour environmental endurance at 75°C and -35°C, thermal shock cycles from 10°C to 90°C, high-vacuum outgassing, and continuous high-voltage insulation testing.
Understanding the engineering inside TAOJUN Filter Driers: designed for rapid moisture absorption, acid neutralizing, and heavy-duty particulate filtration.
TAOJUN copper filter driers serve as the primary defensive line in refrigeration loops. By trapping moisture, acid, and foreign materials, they protect the compressor from damage and optimize thermodynamic performance.
The global heating, ventilation, air conditioning, and refrigeration (HVAC/R) industry is undergoing a significant transition. Driven by international climate treaties, including the Kigali Amendment, manufacturers are shifting from high-GWP (Global Warming Potential) hydrofluorocarbons (HFCs) like R410A to eco-friendlier alternatives such as HFO blends (R454B, R452A), difluoromethane (R32), and natural refrigerants (R290 propane, R744 carbon dioxide). This refrigerant transition poses new engineering challenges for system cleanliness and moisture control.
Modern synthetic lubricants, particularly Polyolester (POE) and Polyalkylene Glycol (PAG) oils, are highly hygroscopic—absorbing moisture far more rapidly than traditional mineral oils. If moisture enters the system, it reacts with POE oil through hydrolysis, creating organic acids and alcohols. These acids attack copper winding insulation, erode metal surfaces, and create metallic sludges that clog expansion devices. Therefore, modern filter driers must offer increased moisture absorption and precise chemical filtration.
To address this, our R&D division develops proprietary configurations utilizing pure 3A zeolite molecular sieves. Standard 4A sieves can co-adsorb refrigerant molecules along with water, leading to chemical degradation and desiccant disintegration. By maintaining a strict 3Å pore size, our desiccant core selectively adsorbs only water molecules, maintaining structural integrity and preventing chemical reactions with R32, R134a, or R290.
Optimized core compositions compatible with HFO, HFC, HC, and natural refrigerants, avoiding chemical reactions under high pressures.
High moisture capacity captures water before it triggers lubricant hydrolysis, preventing acid generation and compressor motor burnout.
Engineered internal geometries provide high flow rates with minimal pressure drops, maximizing overall system energy efficiency (COP).
How Taojun ensures continuous supply, quality parity, and smooth logistical integration for global appliance and HVAC brands.
Industrial procurement managers face challenges including volatile raw copper prices, quality inconsistencies from component suppliers, and strict environmental compliance mandates. A single line stoppage caused by a defective filter drier or access valve can disrupt production schedules and lead to significant financial losses. Our manufacturing infrastructure is structured to minimize these sourcing risks.
We work closely with global household names like Haier, Midea, Gree, Whirlpool, Electrolux, and Huarui, building deep experience in high-volume, automated production lines.
Our Manufacturing Execution System (MES) tracks raw material inputs, heat treatments, brazing temperatures, and leak testing results for every batch, ensuring full traceability.
Located near the Port of Ningbo, we offer fast sea freight dispatch, global container tracking, and rapid custom clearance, ensuring reliable delivery timelines.
With an average MOQ of 500 units for custom specifications and structured stocking agreements, we help OEMs optimize cash flow and inventory turnover.
Over 35 years of engineering progress, tracing our journey from a specialized university workshop to a global industrial manufacturing supplier.
Establishing the production foundation: Xiangshan Refrigeration Accessories Factory expansion, solidifying copper machining and processing methods.
Introduction of the MES intelligent workshop management system, transitioning the facility toward digital quality tracking and automation.
Expanding the global sales footprint and developing eco-friendly filtration products compatible with new low-GWP refrigerants.
At the core of Ningbo Taojun's success are our values: Honesty, Innovation, Responsibility, and Cooperation. We believe that professional performance relies on specialized knowledge, which is why we continue to invest in automated production tooling, personnel training, and R&D partnerships.
Our quality management protocols conform to global standards, ensuring safety, reliability, and regulatory compliance.
Main ISO 9001 Certificate
Detailed Scope Document
Ningbo Taojun operates in compliance with GB/T19001-2016 / ISO9001:2015 quality standards (Registration No.: 41325Q00065R0S). This verification covers our complete system for designing and manufacturing filter driers, condensers, and access valves.
Our raw material selections conform to European RoHS directives, REACH rules, and UL regulations, ensuring all components are free of hazardous substances and suitable for eco-conscious markets.
Continuous process improvement: combining high-precision machinery with automated verification tests.
Our quality control program aims for a product defect rate under 0.05% through material checks, inline automated inspection, and final quality control audits.
We use automated vacuum helium leak detection systems to test brazed joints, ensuring hermetic seal reliability under high system pressures.
Components undergo continuous cycle testing from -35°C to 75°C for 500 hours, validating mechanical stability under severe operating conditions.
To prevent internal contamination, drying cores and desiccant sieves are handled in climate-controlled cleanrooms, minimizing moisture intake during assembly.
Answers to engineering and procurement questions regarding filter drier selection, material compatibility, and system optimization.
A complete selection of ancillary refrigeration accessories, raw materials, and structural connectors for commercial and domestic HVAC systems.
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