Explore our core selection of industrial refrigeration components, connection accessories, and tools designed for high thermal integrity and zero leakage.
In modern refrigeration, HVAC systems, and thermal exchange systems, the integrity of a brazed joint dictates the lifespan of the entire thermodynamic cycle. Poor jointing leads to refrigerant leakage, compressor strain, and catastrophic micro-structural failures. As an industry-leading Brazing Materials Manufacturer and Supplier, Ningbo Taojun Refrigeration Equipment Co., Ltd. analyzes the thermodynamic properties of high-purity copper, silver alloys, and phosphor-copper chemistry to engineered absolute zero-leakage solutions.
Brazing relies heavily on capillary action—the ability of a liquid alloy to flow into the tight clearance between matching base metals. This requires tight control of metallurgical tolerances, surface oxides, and heat cycles. Our components, ranging from copper filter driers to custom U-bend tube fittings, are designed to deliver clean heat propagation paths, reducing structural defects during high-temperature flux and inert gas welding.
Bridging academic material science with mass manufacturing precision since 1988.
Ningbo Taojun Refrigeration Equipment Co., Ltd. is located in Xiangshan, Ningbo, a prominent coastal industrial hub in China. Founded in 1988, its predecessor was the renowned Xiangshan Refrigeration Accessories Factory of Zhejiang University. This scientific foundation has steered our development for over three decades.
Today, we are a national high-tech enterprise (accredited in 2021) integrating industrial design, metal alloy research, thermodynamic validation, and structural engineering. Our flagship brand, "Lingshan," has set a domestic benchmark for high-reliability refrigeration filters, copper accumulator units, and heavy-duty split service valves.
We have built strategic, long-term OEM/ODM development agreements with global domestic appliance giants including Haier, Xinfei, Midea, Gree, Whirlpool, Electrolux, and Huarui. Our global supply logistics network guarantees uninterrupted custom parts delivery to domestic assembly plants and major international hubs in Europe, North & South America, Southeast Asia, and the Middle East.
Advanced equipment, academic collaboration, and micro-tolerance manufacturing processes.
Our core engineering cell features 15 senior research engineers, all holding Doctorates or Professorships from the prestigious University of Science and Technology of China (USTC). This academic powerhouse designs custom solutions with sub-micron structural tolerances.
Our primary production lines are equipped with precision tools imported directly from Germany. This machinery maintains mechanical alignment tolerances down to ±0.02mm for aluminum and high-purity copper, preventing joint misalignment prior to brazing.
Our material specifications are uncompromised: Japanese non-shrinkage ITO film and structural uniform liquid crystal spacers; specialized technical adhesives imported from Europe; thermal-tolerant protective film stable up to 80-90°C.
How we engineer chemical purity, leak-proof designs, and high-strength metallurgical bonds.
| Brazing Alloy Grade | Silver % | Phosphorus % | Copper % | Melting Temperature Range | Recommended Application |
|---|---|---|---|---|---|
| Phosphor-Copper Solder | 0% | 6.8 - 7.2% | Balance | 710°C - 793°C | Copper-to-Copper self-fluxing joints in standard refrigeration pipelines. |
| 5% Silver Alloy Rod | 5.0% | 5.8 - 6.2% | Balance | 640°C - 790°C | Enhanced ductility joints subject to high mechanical vibration. |
| 10% Silver Alloy Rod | 10.0% | 5.8 - 6.2% | Balance | 640°C - 740°C | Optimized for variable-speed compressor joints and tight capillary welds. |
| 15% Silver Alloy Rod | 15.0% | 4.8 - 5.3% | Balance | 640°C - 705°C | Premium ductility, low eutectic melting point, ideal for copper-brass connections. |
Fostering global growth through Honesty, Innovation, Responsibility, and Deep Cooperation.
A world-class brand is built on a solid corporate culture. At Taojun, we believe that culture is forged through Impact, Infiltration, and Integration. Over the years, our growth has been driven by our core values:
Honesty: We adhere to a people-oriented approach, high-integrity management, and quality first. Honesty is our key competitive edge.
Innovation: Innovation is the essence of our culture, driving advances in concept, mechanism, technology, and management.
Responsibility: We maintain a strong sense of responsibility and mission for our clients and society.
Cooperation: We collaborate with partners to create win-win scenarios, achieve resource integration, and leverage professional expertise.
1998
Establishment of our dedicated production base and original office factory structures.
2008
Deployment of the MES intelligent workshop management system, digitizing production and material tracing.
2024 & Beyond
Global expansion of green manufacturing lines and next-generation low-carbon copper alloy components.
How we ensure mechanical resilience and leak-proof performance under high structural loads.
To guarantee structural integrity, our raw materials undergo strict validation prior to processing. We test mechanical tolerances down to ±0.02mm, and each batch of copper tubing is analyzed for composition and grain size.
GB/T19001-2016/ISO9001:2015 Cert
Accredited Scope Details
Official ISO Verification available via CNCA China (www.cnca.gov.cn) & partner Zhongci International (www.zcgirz.com).
Our manufacturing lines strictly follow international environmental and safety frameworks, holding verified EU RoHS Directive Certifications, US UL Certifications, and REACH/WEEE compliances. By maintaining strict control over lead and cadmium impurities in our copper formulas, we ensure our brazed joints are safe and compliant for clean water transport and consumer refrigeration applications.
Engineered to perform in residential appliances, large cold chains, and demanding automotive systems.
We support our customers with comprehensive technical consultation, backed by 15+ years of pump and compressor engineering expertise.
We are committed to long-term partnerships, offering comprehensive post-purchase support and troubleshooting assistance.
Leading the path toward eco-friendly refrigeration and zero-carbon metallurgical solutions.
Adapting alloy compositions and filter desiccant structures to prevent corrosion from new eco-friendly refrigerants like HFO-1234yf and carbon dioxide systems.
Upgrading customer manufacturing with laser-based automated brazing tools, improving joint consistency while cutting energy use.
Developing lead-free brass fittings and highly recyclable copper-phosphorus compounds to support global circular economy directives.
Expert insights on metallurgy, installation practices, and refrigeration component specifications.
Browse our selection of silver-copper alloys, high-pressure charging hoses, U-bends, and specialized HVAC/R service valves.
Taojun
