Explore our highly requested line of copper filter driers, brass fittings, control boards, and specialized refrigeration accessories designed for maximum efficiency.
Located in Xiangshan, Ningbo, a scenic coastal hub, our company has built a legacy spanning over three decades. Originally founded in 1988 as the Xiangshan Refrigeration Accessories Factory of Zhejiang University, we have evolved into a national high-tech enterprise integrating precision R&D, mass production, global sales, and comprehensive after-sales support.
Under our renowned domestic brand "Lingshan" and our dynamic international brand "Taojun", we specialize in high-end refrigeration components: filter driers, check valves, air conditioning valves, condensers, brass and copper accessories, and cable ties. With ISO9001:2008, EU RoHS, REACH, and US UL certifications, we guarantee that every batch of parts meets the uncompromising demands of premier global appliance manufacturers.
Watch our state-of-the-art facility operating under full automation. From MES intelligent control to raw materials treatment, our manufacturing capabilities represent the leading edge of precision parts production.
Addressing the key engineering priorities of OEM/ODM buyers, engineering directors, and system integrators worldwide.
In modern HVAC/R engineering, the fan motor serves as the heart of dynamic thermal management. Efficient heat dissipation in commercial cold displays, outdoor air conditioning condensers, and variable air volume systems relies heavily on the fan motor's efficiency, structural integrity, and durability.
Procurement managers and HVAC technicians face significant challenges: motor vibration leading to micro-cracks in copper tubing, high operating temperatures accelerating winding degradation, and energy losses in low-end induction motors. For refrigeration lines, protecting the circuit from moisture and dynamic friction is vital. High-purity copper filter driers and reliable access valves prevent moisture and acid buildup, protecting both the compressor and the fan motor.
Our engineering approach ensures that all refrigeration system components—from the core filter drier to the dynamic fan motor installation—harmonize perfectly. Below is the technical breakdown of our systems compatibility:
| System Component | Critical Engineering Parameter | Industry Standard Target | Taojun Compliance Standard |
|---|---|---|---|
| Fan Motor Systems | Dynamic Balance / Thermal Runaway | ISO 1940 G2.5 / Class B (130°C) | Class F (155°C) Winding Insulation |
| Copper Filter Driers | Desiccant Water Absorption Capacity | ≥ 15% at 25°C ambient | ≥ 20% using 3A Molecular Sieve |
| Inverter Control PCBs | Power Conversion Efficiency | ≥ 92% under full system load | 95%+ High-efficiency Inverter Modules |
| Brass/Copper Fittings | Pressure Containment Profile | Min Burst Pressure 60 bar | Helium Leak Checked to 100 bar |
Why elite brands trust Taojun to engineer and manufacture their high-precision refrigeration accessories.
Our core production machinery is imported directly from Germany, ensuring precise tolerances of up to ±0.02mm on all metal forming and copper tube operations.
Collaborating with Zhejiang University and the University of Science and Technology of China, our engineering laboratory is staffed by 15 professors and PhD specialists.
We provide full design customization with rapid digital prototyping, customized sizing, and adaptive shapes tailored for unique cooling applications.
Our high-tech manufacturing processes use premium raw materials, including imported liquid crystal spacers and ITO film directly from Japan for heat-resistant operations.
All electronics undergo a 24-hour high-voltage 100V burn-in test. Complete assemblies undergo high/low temperature cycles (-35°C to 75°C) for 500 consecutive hours.
Real-time factory scheduling, automated optical inspection (AOI), and laser tracking ensure a 99.95% acceptance rate on standard production batches.
Inside Taojun's manufacturing facility, where technology meets rigorous quality assurance.
Operating within the Ningbo-Zhejiang industrial cluster provides us with direct access to raw materials and refined copper processors. This geographic concentration minimizes transit times, simplifies quality checks, and keeps our manufacturing cost-competitive.
With standard container ports nearby, our global shipping lanes are fast and reliable. For urgent orders, we maintain raw copper tubing and desiccant stock, allowing us to respond quickly to sudden demand increases.
Operating across 50 countries, we maintain the credentials required for complex international markets.
GB/T19001-2016 / ISO9001:2015 Certification
Certified B2B Production Scope
Ningbo Taojun Refrigeration Equipment Co., Ltd. holds current validation under China's CNCA (Registration No.: 41325Q00065R0S). This verification covers the design, manufacture, and deployment of critical cooling components like filter driers, condensers, and access valves.
Our localized technical support features structured 24-hour response systems. We offer technical documentation, custom design blueprints, and direct video consultations with our engineering team to verify local code compliance.
Where our components are deployed to ensure system integrity and efficiency.
Our business model is built on structured pre-sales and after-sales support systems, ensuring projects run smoothly from design through to deployment.
We offer direct support from experienced product engineers, providing technical evaluations, compatibility audits, and customized design reviews.
We monitor the manufacturing process through our MES platform and keep clients updated with automated status reports.
We offer a one-year warranty on all products and provide technical assistance and troubleshooting support.
Key design developments shaping the future of global cooling technologies.
The industry is moving toward Electronically Commutated (EC) and Brushless DC (BLDC) motors, which offer higher energy efficiency and variable speed control.
The adoption of natural refrigerants like propane (R290) and isobutane (R600a) requires copper filter driers and safety valves optimized for flammability and higher operating pressures.
Adding sensors to fan motors and refrigeration circuits enables real-time performance monitoring and preventive maintenance.
Explore our line of replacement parts, brazing supplies, and installation components for professional HVAC/R projects.
Answers to common engineering and procurement questions about system compatibility and component lifespan.
High-quality fan motors, particularly brushless DC (BLDC) or EC motors, ensure stable airflow across evaporator and condenser coils. This stability prevents frost build-up, maintains correct operating pressures, and improves energy efficiency, which is critical for meeting strict environmental standards.
Filter driers absorb moisture and acid within the refrigeration circuit and filter out physical debris. By keeping the refrigerant clean and dry, they prevent chemical corrosion in the compressor and scaling in the tubing, protecting the entire system.
Our advantages include 35+ years of R&D experience, collaborations with institutions like Zhejiang University, imported German manufacturing equipment, and a robust ISO 9001:2015 certified quality system. We also offer customization options and efficient logistics via the Ningbo port.
We customize component sizes, tube diameters, connection types, and desiccant capacities. Customers can share their technical specifications or blueprints, and our engineering team will develop custom samples for testing.
Every component goes through rigorous testing, including high-pressure nitrogen checks, helium mass spectrometer leak detection (verifying leak rates below 1x10^-6 mbar·l/s), and thermal shock cycling to ensure durability under harsh operating conditions.
Taojun
