Engineered to international quality benchmarks for long-term operational resilience.
Ningbo Taojun Refrigeration Equipment Co., Ltd. is located in Xiangshan, Ningbo, a historic and prominent manufacturing hub. Founded in 1988, our predecessor was the Xiangshan Refrigeration Accessories Factory of Zhejiang University. This technical foundation has empowered our growth over the past three decades into a nationally recognized National High-Tech Enterprise (accredited in 2021).
Our comprehensive production facility integrates modern product design, research and development (R&D), mass manufacturing, and responsive global after-sales support. We specialize in producing precision HVAC/R components, including filter driers, check valves, air conditioning valves, finned tube condensers, brass and copper accessories, and specialized installation components.
With an unwavering pursuit of quality, our "Lingshan" brand filter driers and brass fittings have become benchmarks for reliability in China's domestic refrigeration market. We hold certified compliance standards under the ISO9001:2015 quality management system, the EU RoHS environmental protection directive, and the United States UL certification.
Technical evolution, material science, and safety parameters in modern HVAC/R systems.
We utilize standardized alloys including C36000 (Free-Cutting Brass) and HPb59-1. This ensures excellent structural integrity, corrosion resistance, and optimized machinability for strict tolerance compliance.
Modern commercial cooling demands connection points capable of resisting thermal cycle stresses and mechanical vibration. Flare nuts serve as critical physical joints preventing gas leakage in R32 and R410A systems.
Every batch conforms to RoHS and REACH environmental guidelines. Heavy metals, particularly lead limits, are managed dynamically via specific forging processes to guarantee environmental eligibility globally.
Industrial refrigeration is transitioning toward natural refrigerants like CO₂ (R744) and Propane (R290), which require significantly higher operating pressures. This transition shifts connection demands toward high-yield strength brass profiles. Standard brass flare nuts are now engineered to sustain mechanical pressures up to 120 Bar through advanced grain refinement techniques during extrusion.
Our collaborative R&D work with institutions like the University of Science and Technology of China addresses stress corrosion cracking (SCC) in humid, saline coastal environments. By introducing minor alloy modifiers and utilizing controlled stress-relief annealing, our latest generation of brass components delivers twice the fatigue life compared to standard brass fittings.
Providing specialized structural and filtration components for commercial and household refrigeration.
For over 38 years, Taojun has refined the design and manufacture of refrigeration components. Our primary catalog highlights include:
Our design team utilizes simulated flow models to minimize pressure drops within the filter driers, improving overall system energy efficiency.
High-capacity machinery, university-backed R&D, and strict multi-phase testing protocols.
Our core production machinery is imported directly from Germany, ensuring precise forging and repeatable dimensional accuracy within ±0.02mm tolerances.
Our R&D center operates with a specialized team of 15 senior engineers and technical advisors, including doctoral graduates from the University of Science and Technology of China.
We source our raw materials carefully: liquid crystal materials are imported from Japan, and specialized heat-resistant adhesive formulations are sourced from certified European manufacturers.
Every production lot undergoes rigorous evaluation within our testing laboratory to ensure field reliability:
Delivering robust structural connections for modern commercial and household refrigeration.
Our high-purity copper shells (rust-resistant and pressure-tolerant) are joined using automated argon-arc welding to ensure leak-free operation. The internal molecular structure features a 3A molecular sieve with water absorption efficiency ≥20% to prevent moisture-induced corrosion.
A history of engineering quality and technical advancement.
Our initial factory building was established in Xiangshan, focused on supplying critical refrigeration fittings to domestic appliance brands.
Implementation of our MES intelligent workshop management system to optimize production workflow and traceability.
Upgraded our precision machining centers and expanded international compliance certifications to serve global HVAC markets.
Our group is built on four core values: Honesty, Innovation, Responsibility, and Cooperation.
Adhering to people-oriented management, operational integrity, and a focus on premium quality as the source of our competitive edge.
Continuously refining concepts, manufacturing mechanisms, and technical standards to remain agile in a changing global market.
Maintaining a strong sense of mission to deliver reliable components that safeguard our customers' systems.
Striving to build mutual trust and integration of resources with domestic and international partners for long-term growth.
Verifiable compliance with international manufacturing and environmental standards.
Ningbo Taojun Refrigeration Equipment Co., Ltd. operates under the official GB/T19001-2016/ISO9001:2015 certification (Registration No.: 41325Q00065R0S), validating our design and production workflow for filter driers, condensers, and access valves.
Our certifications are verifiable via China's national database (CNCA - www.cnca.gov.cn) and our audit partner Zhongci International (www.zcgirz.com). We also hold EU RoHS and US UL approvals to ensure global market eligibility.
Registration Certificate
Detailed Certified Scope
Flexible procurement models, domestic logistics, and localized international support.
Technical consulting with our applications engineering department. Direct assistance from sales engineers, with responses within 8 hours.
Custom dimensional profiling, specialized copper alloys, and private label packaging options. Minimum order quantities starting at 500 units.
One-year standard warranty on mechanical components. Ongoing technical support and field engineers available for installation consulting.
We work closely with global design engineering teams to align with regional safety codes (e.g., ASME standards in North America, CE marks in Europe). Our design verification processes include Finite Element Analysis (FEA) to simulate stress distribution under torque limits and prevent deformation during high-pressure cycles.
Answers to common questions regarding material standards, pressure limits, and custom orders.
Supplying critical system components to global home appliance and commercial HVAC brands.
Taojun