Explore our core high-precision quick coupler kits, bundy tubes, and bidirectional HVAC/R pressure monitoring valves adapted for harsh tropical environments.
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.
In 2012, Ningbo Taojun Refrigeration Equipment Co., Ltd. was established, creating the brand "Taojun" condensers, "Taojun" stop valves, and other series of products. 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. The company's goal is to support and cooperate with every sincere customer to achieve a win-win situation.
Understanding the structural growth, localized engineering challenges, and regional supply chain configurations.
Thailand has evolved into one of the principal manufacturing platforms for the global heating, ventilation, air conditioning, and refrigeration (HVAC/R) industry. Driven by the expansion of the Eastern Economic Corridor (EEC) and industrial zones across provinces like Chonburi, Rayong, and Chachoengsao, the country acts as a massive exporter of commercial and residential air conditioners. Global titans and domestic HVAC assemblers require access to highly reliable quick couplers, safety valves, and filters that can endure demanding automated assembly procedures and aggressive tropical weather conditions.
Our engineering division recognizes that local factories operating in Thailand require component reliability that matches European and Japanese import standards. The local climate demands high resistance to high ambient humidity, which increases moisture contamination risks in refrigeration loops. Consequently, quick couplers and filter driers must exceed standard hermetic performance metrics to prevent moisture entry during charge operations and system maintenance.
Thailand's industrial sector is transiting rapidly toward eco-friendly, low-GWP (Global Warming Potential) refrigerants like R32, R290 (propane), and R410A. This transition demands quick adapters and couplers engineered for high pressure and volatile gas envelopes. Leakage protection is critical. With strict environmental directives and safety guidelines governing explosive refrigerants (such as R290), manufacturers are upgrading their charging stations with zero-leakage, dry-break quick couplers.
Furthermore, in automotive production lines across Rayong (the Detroit of the East), automotive air-conditioning (MAC) charging units rely heavily on robust R134a and R1234yf quick coupling adapters to handle massive production throughput without degrading valve seals.
Over 38 years of experience in high-quality refrigeration component manufacturing.
Taojun copper filter driers are designed to absorb moisture and acid, and to filter out impurities. Installed as standard components and replacement parts for domestic and commercial refrigerators, freezers, and heat pumps.
Utilizing high-purity, rust-resistant, and high-pressure copper pipes. Sealed via automated argon arc welding to ensure maximum structural integrity and zero chance of operational gas leakage.
Equipped with premium 3A molecular sieves providing water absorption efficiency of ≥20% and an integrated activated carbon layer to catch harmful synthetic oils breakdown compounds.
Engineering capabilities, strict QC practices, and high-tech German equipment.
Our core manufacturing equipment is imported directly from Germany, enabling precision tooling tolerances of ±0.02mm for aluminum and brass parts.
We host 15 engineers in our R&D center, possessing doctorates and academic partnerships with the University of Science and Technology of China (USTC) and Zhejiang University.
Completely customized sizes, threads, configurations, and materials are available to match custom assembly configurations. We support short-run prototyping and global supply chains.
Our raw materials, including high-stability ITO film and protective materials, are imported from Japan and Europe to withstand extreme thermal ranges (70°C to -35°C).
We subject finished products to thermal shock testing (10°C - 90°C), 500-hour damp heat testing, and high-voltage breakdown checks to assure long lifecycle operation.
Using industry-leading mass spectrometer helium leak detectors, every industrial batch is thoroughly checked, ensuring a leak rate under 0.05%.
1998
Constructed early factory facilities expanding copper component capacity.
2008
Introduced MES intelligent workshop management and ERP tracking.
2024
Integrated automated robotics and custom manufacturing workflows.
Honesty: Integrity management and quality utmost have established Taojun's competitive edge across global markets.
Innovation: A continuous push to innovate concept, mechanism, and precision technologies enables us to adapt to global industrial transitions.
Responsibility: We bear structural responsibilities for the durability and environmental footprint of our refrigeration components.
Cooperation: Building deep-seated connections with international distributors, HVAC brands, and repair operations globally.
Years of Engineering Experience
Global Export Destination Countries
Strict Manufacturing Defect Rate
PhD-led Research Engineers
How Taojun integrates into automated HVAC/R production lines in Thailand.
Refrigerant charge lines require quick connection interfaces that prevent the ingress of atmospheric moisture during assembly. Our quick couplers and adaptors are designed for quick click-and-seal connection. They are optimized with internal valving structures that seal off line pressure before disconnecting. This is crucial for maintaining vacuum levels and avoiding refrigerant leaks in Thai factories where temperatures exceed 35°C with high relative humidity.
We work directly with assembly plants in Thailand to design custom fittings, brass manifolds, and specialized receiver tanks. Our development pipeline moves from initial 3D modeling and structural testing, through prototype machining, and into high-volume manufacturing. This pipeline conforms with environmental certifications (RoHS, REACH, WEEE) to support global trade and compliance needs.
Advanced CNC Multi-Axis Automated Workshop
High-grade brass valves, copper connections, and filter components optimized for Thailand's industrial applications.
Juntao Refrigeration (NINGBO TAOJUN REFRIGERATION EQUIPMENT CO., LTD.) operates under rigorous manufacturing quality standards, verified by GB/T19001-2016 / ISO9001:2015 certification (Registration No.: 41325Q00065R0S). This system ensures complete quality tracking for filter driers, condensers, and access valves.
ISO9001:2015 Certificate
Registered Certification Scope
Direct answers to common engineering questions concerning quick couplers, access ports, and line components.
We manufacture quick adapters and couplers supporting standard SAE flare threads (such as 1/4" and 3/8" SAE flare threads) as well as BSP and NPT options. Custom thread patterns can be machined according to OEM drawings.
Each quick coupler features internal valves and elastomer seals (Viton or HNBR, depending on the refrigerant option). These seals close off flow before the coupler release mechanism activates. Additionally, assemblies undergo deep vacuum helium testing down to a threshold of 10^-5 mbar·l/s.
Yes. Our brass and copper fittings are designed to withstand the higher pressure requirements of R32 systems. For systems using flammable refrigerants like R290 (propane), our dry-break, spark-free quick couplers minimize residual release to prevent potential hazards.
Our standard copper filter driers utilize a premium 100% 3A molecular sieve core (XH-9 or XH-11 grade, depending on system requirements). This configuration ensures clean refrigerant flow without reacting with PAG or POE compressor lubricants.
Yes. All of our refrigeration components, including copper fittings, brass valves, and filter driers, comply with EU RoHS (Restriction of Hazardous Substances) and REACH guidelines. Material certifications are available upon request.
We collaborate with freight forwarders to provide standard marine shipment options to major Thai ports like Laem Chabang. Urgent prototype runs and custom tools can be shipped via air express to minimize line downtime.
Taojun
