Explore our foundational range of heavy-duty copper filter driers, wall brackets, and system accessories designed for long-term operational resilience.
Ningbo Taojun Refrigeration Equipment Co., Ltd. is located in Xiangshan, Ningbo—a coastal manufacturing hub. Founded in 1988, our operational origins traces back to the Xiangshan Refrigeration Accessories Factory of Zhejiang University. This direct tie to academic research and scientific inquiry established our foundational ethos: technological superiority, precision manufacturing, and engineering innovation.
For more than 30 years, Taojun has designed, tested, and distributed industry-leading refrigeration accessories. Today, we stand as a certified National High-tech Enterprise, delivering high-purity copper connections, filter driers, check valves, air conditioning valves, condensers, brass components, and related systems to domestic and global partners.
With verified certifications including ISO9001:2015, EU RoHS, REACH, and US UL certifications, Taojun ensures that every component shipped meets international performance standards, minimizing field failures and optimizing refrigeration efficiency.
Over 35 years of engineering experience originating from Zhejiang University refrigeration initiatives.
15 engineers in our core R&D center, including PhDs and professors from the University of Science and Technology of China.
Exporting to Europe, North and South America, Southeast Asia, the Middle East, and Africa, serving brands like Gree, Haier, Midea, and Whirlpool.
Minimizing system resistance, optimizing heat exchange loops, and securing complete hermetic insulation.
TAOJUN copper filter driers are engineered to protect refrigeration systems by absorbing moisture, capturing organic acids, and filtering out physical particulates. When installed as an inline component or a field replacement part, our driers shield the compressor from moisture-induced chemical degradation and prevent ice-plugging in capillary systems.
Our copper connection portfolio includes access valves, extruded manifolds, copper-to-aluminum transition joints, and custom-bent tubing designed for industrial HVAC/R units. Utilizing automated cutting, bending, and punching equipment imported from Germany, we achieve tolerances within ±0.02mm, eliminating friction losses and turbulence in refrigerant flow lines.
Aligning component designs with global environmental policies, natural refrigerants, and smart IoT control systems.
As the global HVAC/R market transitions away from hydrofluorocarbons (HFCs) due to strict F-Gas regulations, the engineering requirements for copper connections and filters have evolved. Modern systems utilizing high-pressure natural refrigerants like CO2 (R744) and flammable options like Propane (R290) demand extreme burst pressure parameters and zero ignition risk profiles.
Our engineering roadmap has introduced cold-formed thick-walled copper connections that comfortably handle CO2 systems operating at pressures exceeding 120 bar. In parallel, our R290-compliant filters are designed with non-sparking terminal welds and minimized internal charge volumes to meet international safety norms.
In response to environmental goals, Taojun is phasing in 100% lead-free brass fittings and sourcing low-carbon copper cathodes refined via renewable energy. This keeps our OEM partners ahead of future RoHS amendments and helps lower their Scope 3 carbon footprint.
Our upcoming generation of filter driers features inline moisture indicators and embedded RFID tags. This allows field technicians to check desiccant saturation levels using mobile scanners, transitioning maintenance from scheduled intervals to real-time status diagnostics.
Leveraging automated technologies, MES execution systems, and optimized logistics from Ningbo.
Operating a smart factory in Ningbo, China, allows Taojun to achieve manufacturing consistency that traditional, labor-intensive facilities cannot replicate. Our factory floor integrates automation, real-time quality loops, and vertically integrated raw material sourcing to ensure cost stability and supply chain security.
Our primary manufacturing lines employ German-imported automated CNC tube cutters, multi-directional bending machinery, and automated braze injectors. To ensure zero-defect escape rates, each assembly line integrates CCD visual inspection cameras to check solder joints and detect surface micro-cracks automatically.
From copper coil uncoiling to final desiccant vacuum packing, every process is logged by our MES (Manufacturing Execution System). Each batch is marked with a laser-etched matrix code, allowing full traceability of copper chemical purity, molecular sieve humidity logs, and helium leak test records.
To ensure high durability under extreme conditions, finished items undergo strict testing: high and low-temperature storage (-35°C to 75°C for 500 hours), thermal shock cycles (10°C to 90°C), and continuous damp heat tests. Our protective coatings are engineered to resist degradation in demanding coastal or high-humidity settings.
Providing high-durability components tailored to key application sectors.
We supply high-efficiency, small-footprint filter driers and capillary connections to domestic appliance brands. Our components help brands like Midea and Haier meet strict energy efficiency ratings and achieve 10+ year operational life cycles.
Our heavy-duty vibration absorbers, liquid line filter driers, and thick-walled brass manifolds are designed for commercial VRF systems, rooftop chillers, and large shopping mall HVAC installations.
Our high-capacity molecular sieve driers and hermetic access valves help safeguard refrigerated transport containers, storage hubs, and supermarket display cases, preventing moisture damage and preserving perishable goods.
Ensuring clear communication, smooth logistics, and strict regulatory alignment for global procurement managers.
Procuring custom copper components at scale requires clear coordination across engineering, compliance, and shipping logistics. Taojun simplifies this with dedicated international support teams and certified manufacturing processes.
Our technical sales engineers review custom drawings (in DWG, STEP, or PDF format) to evaluate tolerances and copper alloy suitability. We also offer rapid prototype services, delivering sample units within 7-10 working days to help accelerate your R&D cycles.
Every shipment includes material test reports (MTRs), pressure test certificates, and compliance declarations. In the rare event of a field issue, our engineering team responds within 24 hours with a comprehensive 8D corrective action report.
We verify that all shipments comply with regional environmental standards, including the EU RoHS Directive, REACH regulations, and WEEE directives. Our packaging is also designed to be 100% recyclable, helping corporate partners meet their ESG goals.
Review our official quality documentation and manufacturing certifications.
ISO 9001:2015 Certificate
Certification Scope Details
High-Tech Enterprise Certificate
Verified Quality Audit
Honesty: We prioritize transparent business relationships, consistent material quality, and reliable delivery commitments. Integrity is the foundation of our long-term customer partnerships.
Innovation: We continually update our production processes, upgrade our manufacturing machinery, and train our engineers to keep pace with changing HVAC/R technologies.
Responsibility: We stand behind the quality of every component we ship, ensuring our products contribute to safer, more efficient systems.
Cooperation: We work closely with customers to solve engineering challenges, optimize manufacturing processes, and establish stable, mutually beneficial supply agreements.
Common questions from HVAC/R system designers and procurement leads.
Explore our full range of refrigeration motors, sealing tapes, contactors, and diagnostic valves.
Taojun