Explore our foundational range of certified copper components, capacitors, valves, and precision parts manufactured at our state-of-the-art facility.
Ningbo Taojun Refrigeration Equipment Co., Ltd. is located in Xiangshan, Ningbo, a beautiful tourist city. Founded in 1988, its predecessor was Xiangshan Refrigeration Accessories Factory of Zhejiang University. The company's leading products include: filter driers, check valves, air conditioning valves, condensers, brass and copper accessories, air conditioning cable ties, and other refrigeration accessories series products.
After 30 years of hard work and rapid development, it has now become a comprehensive enterprise integrating the design and development, production and sales, and after-sales service of refrigeration accessories. In 2021, it became a national high-tech enterprise. Our company is committed to technological and process innovation, equipment improvement, and the introduction of advanced management concepts to produce first-class products.
Customer satisfaction is our unwavering pursuit. With reasonable design, reliable quality, and perfect after-sales service, the "Lingshan" filter has become a well-known brand in the domestic refrigeration industry. The company has successively passed ISO9001:2008 quality management system certification, EU ROHS environmental protection directive certification, and US UL certification. The company always takes customer needs as the basis and continuously innovates management concepts to ensure efficient and stable development.
TAOJUN was established in 1988 and has been producing copper filter driers and related components for 41 years. We have domestic leading research and development capabilities in refrigeration and electronic parts, as well as industry-advanced level quality control systems.
In 2012, Ningbo Taojun Refrigeration Equipment Co., Ltd. expanded further, creating the brand "Taojun" condensers, "Taojun" stop valves, and advanced switching modules. Over the years, it has established partnerships with well-known domestic and foreign home appliance enterprises such as Haier, Xinfei, Midea, Gree, Whirlpool, Electrolux, and Huarui. The product sales network covers major and medium-sized cities in China and is exported to Europe, America, South America, Southeast Asia, the Middle East, Africa, and other overseas markets.
Our core capabilities cover a wide spectrum of component configurations designed to exceed industrial engineering tolerances.
In modern industrial refrigeration and HVAC systems, response times, electrical isolation, and cycle life are critical. Here is how advanced high-speed relays drive efficiency.
High speed relays are specialized electrical switches designed to open or close circuits within milliseconds (typically <5ms for electromechanical and <1ms for solid state). They prevent voltage drops, protect compressors, and control high-frequency switching operations in automation.
Industrial components must meet regional standards like UL (North America), CE (Europe), and CCC (China). Taojun provides 24-hour localized technical consulting, troubleshooting support, and comprehensive document compliance to simplify import processes.
Our production base in Ningbo leverage a highly efficient logistics network, local raw material clusters, and advanced high-speed assembly line capabilities. This integration reduces production costs while maintaining strict tolerances.
As home appliance and refrigeration systems move toward inverter compressors and smart grid integrations, the demand for fast-response relays has increased. Traditional relays, with contact switching speeds of 15ms to 25ms, expose system controllers to transient voltage feedback and contact arcing during power fluctuations.
Our next-generation high-speed relays utilize refined electromagnetic coils, optimal contact gap dimensions, and low-inertia spring armatures. By reducing contact bounce time to less than 1.5 milliseconds, these switches minimize electrical noise, extend the lifetime of electrolytic capacitors, and prevent logic board resets during power interruptions.
In commercial refrigeration systems (such as high-capacity ice makers and supermarket cold display units), rapid response switching prevents pressure surges when switching between active cooling cycles and defrost cycles. This integration protects key refrigeration accessories like our filter driers, check valves, and copper manifolds from rapid physical fatigue.
From importing core manufacturing machinery to conducting rigorous thermal and structural testing, we focus on durability and performance.
Our core manufacturing equipment is imported directly from Germany, ensuring precise assembly tolerances.
We have 15 engineers in our R&D center, including PhDs and professors from the University of Science and Technology of China.
Custom sizes, contact configurations, and physical shapes are available. We help turn your ideas into reliable products.
Our ITO film (no shrinkage) and liquid crystal spacers are sourced from Japan; specialized adhesives are imported from Europe.
High/low temp testing (75°C to -35°C for 500h), thermal shock, damp heat, and 100V high-voltage insulation tests.
Building trust through a legacy of engineering quality, continuous investment, and a focus on long-term relationships.
Originally founded as Xiangshan Refrigeration Accessories Factory of Zhejiang University. Established early R&D strengths in refrigeration and physical metallurgy.
Integrated the MES intelligent workshop management system. This upgrade digitized workflow tracking and reduced defects in raw materials and finished items.
Upgraded automation equipment and expanded production lines to support the global home appliance sector. Enhanced capacity for smart switching control components.
Honesty: We adhere to the principle of integrity-driven management, focusing on quality and maintaining a reliable reputation. Honesty is central to our competitive approach.
Innovation: Innovation is key to our development. Our teams seek to innovate across concepts, manufacturing processes, technologies, and administrative systems.
Responsibility: We maintain a strong sense of responsibility toward our customers. This focus helps drive the long-term reliability of our products.
Cooperation: Working together toward mutual benefit is a major organizational goal. Collaborative resource integration helps our technical and administrative personnel perform effectively.
Juntao Refrigeration is an ISO 9001-Certified OEM/ODM partner. We maintain strict manufacturing and design parameters across our catalog.
Ningbo Taojun Refrigeration Equipment Co., Ltd. demonstrates an ongoing commitment to quality in manufacturing filter driers, condensers, access valves, and relay control systems. Our facility operates under the GB/T19001-2016 / ISO9001:2015 quality framework (Registration No.: 41325Q00065R0S).
This certification is verifiable via China’s CNCA portal (www.cnca.gov.cn) and our auditing partner, Zhongci International (www.zcgirz.com). It validates our capability to provide OEM/ODM products to customers in diverse global markets.
ISO 9001 Certificate
Scope of Certification
Compliance Documents
Our workshops feature automated production lines and testing laboratories, allowing us to maintain stable manufacturing processes and monitor core product characteristics.
Workshop
Product Line
Testing Lab
Our products are utilized in residential appliances, light commercial systems, and industrial refrigeration projects.
- Comprehensive inquiry and consulting support based on our engineering experience.
- Technical service directly from our sales engineers.
- Inquiry response times typically within 8 hours.
- Technical training and equipment evaluation assistance.
- Installation guidance, debugging support, and troubleshooting advice.
- Maintenance, design updates, and product improvement programs.
- One-year warranty support and lifetime technical assistance for standard items.
Find answers to common technical, shipping, and customization questions regarding our products and manufacturing capabilities.
A high-speed relay is designed to switch electrical contacts within 1 to 5 milliseconds. In HVAC/R systems, this quick action reduces contact arcing, protects solid-state components from voltage feedback, and prevents control system resets during momentary voltage dips.
Our production facilities operate under the GB/T19001-2016 / ISO9001:2015 quality management standard. Our components comply with EU RoHS environmental directives and are design-tested in line with global safety standards, including UL.
Yes. We provide complete OEM/ODM services, including custom sizes, contact configurations, coil ratings, and specialized brackets. We work closely with partners to develop components tailored to specific system designs.
Each batch undergoes testing, including high/low temperature testing (-35°C to 75°C for 500 hours), thermal shock cycles, moisture checks, and a 100V high-voltage insulation test to help ensure reliable operation.
Lead times depend on the order volume and customization requirements. Standard products usually ship within 2 to 4 weeks. For urgent needs or standard items, we work to expedite delivery through our Ningbo shipping networks.
Explore our inventory of HVAC/R control components, specialized driers, and valves engineered for commercial systems.
Taojun