Direct from our state-of-the-art manufacturing factory. Verifiable performance benchmarks.
In high-performance commercial and domestic cooling circuits, system longevity depends entirely on moisture control and particulate containment. Sub-par filtration results in capillary blockage, acid generation, oil breakdown, and eventual compressor seizure. NINGBO TAOJUN REFRIGERATION EQUIPMENT CO., LTD., drawing on over 35 years of engineering experience since our founding as the Xiangshan Refrigeration Accessories Factory of Zhejiang University, delivers enterprise-level OEM and ODM HVAC filtration solutions.
Our filter driers leverage high-purity copper shells, integrated molecular sieves, and precise physical mesh structures to absorb moisture, scavenge acids, and trap contaminants, keeping equipment running at peak thermodynamic performance.
Established in 1988, Ningbo Taojun Refrigeration Equipment Co., Ltd. is located in the scenic coastal city of Xiangshan, Ningbo. What began as the Xiangshan Refrigeration Accessories Factory under the guidance of Zhejiang University has evolved into a national high-tech enterprise (accredited in 2021) that integrates product design, material engineering, advanced manufacturing, and direct export services.
Our core product line includes copper filter driers, brass service valves, condensers, accumulators, and accessories under our signature domestic brand, "Lingshan." Our international brand, "Taojun," represents high-performance refrigeration parts built to meet the needs of global appliance brands like Haier, Midea, Gree, Whirlpool, and Electrolux.
Adapting to green energy mandates, higher mechanical loads, and system longevity expectations.
The global transition to eco-friendly refrigerants (like R32, R290, R1234yf, and CO2) requires highly stable desiccants. Modern HVAC dryer filters must operate under high working pressures without losing physical structure or causing chemical reactions with new oils.
Industrial cold chains and commercial VRF installations demand systems that run for over 10 years without filter failure. Advanced molecular sieves (3A and 4A) must resist thermal cycles and structural breakdown, preventing powder generation that can clog capillary tubes.
With strict RoHS and pressure equipment regulations, manufacturers are moving away from traditional brazing techniques in favor of automated argon arc welding and rigorous leak detection. This guarantees leak-proof joints under extreme operation.
Combining advanced machinery with academic research for reliable HVAC production.
Our core production lines use automated machinery imported from Germany, featuring MES (Manufacturing Execution System) monitoring to track every component's manufacturing history. Automated assembly prevents human error during desiccant filling and welding.
Supported by a specialized team of 15 R&D engineers, including professors and Ph.D. graduates from leading technical institutions. We design custom filtration products for unique operating conditions, offering quick prototyping and custom specifications.
Our materials are sourced from reliable suppliers, using high-purity copper alongside specialized structural membranes. We subject finished products to thermal shock runs (-35°C to 75°C for 500 hours), helium mass spectrometer leak tests, and high-voltage breakdown checks to ensure durability.
Engineered for refrigeration systems across diverse environments.
Essential for supermarket cold displays, industrial freezers, and refrigerated transport. Our filter driers keep moisture out of low-temperature systems, preventing ice formation at capillary tubes.
We provide filter driers and service valves for leading home appliance manufacturers. Our components maintain system efficiency over years of operation, lowering energy costs.
Engineered for coastal cities, marine AC systems, and high-humidity areas. Specialized seals prevent exterior corrosion while the internal desiccant captures ambient moisture during servicing.
From a specialized research-backed factory to a global HVAC components manufacturer.
1998: Factory Infrastructure Foundation
2008: Digital Integration & MES Deployment
2024: Advanced Automated HVAC Production
At Taojun, we believe global brands are built on trust and shared success. By keeping our manufacturing transparent and working closely with clients, we help partners streamline their procurement processes.
Verified quality metrics that satisfy strict international regulations.
Our design and manufacturing of filter driers, condensers, and access valves are certified under ISO 9001 standards (Registration No: 41325Q00065R0S). This certification, verified through China's CNCA, guarantees standardized production steps and full material traceability.
Every batch of raw copper and molecular sieve desiccant is verified upon receipt. Our production processes are designed to minimize environmental impact, meeting EU RoHS and REACH environmental guidelines.
Main ISO 9001 Certificate
Certified Product Scope
Verification Audit
Lab Compliance
High-Tech Accreditation
QC Verification
Industrial Award
At Ningbo Taojun, our service model is designed to support engineering and supply chain teams from initial planning through long-term operation.
Detailed answers to common questions about selection, installation, and operation.
Explore our wider catalog of precision copper fittings, brazing materials, and service components.
Taojun