Explore our high-performance components certified under international global industrial standards.
Established in 1988, Ningbo Taojun Refrigeration Equipment Co., Ltd. (formerly Xiangshan Refrigeration Accessories Factory of Zhejiang University) has spent more than 35 years refining thermal transfer and HVAC process control components. Based in the beautiful port city of Xiangshan, Ningbo, our operations integrate design, advanced R&D, structural engineering, high-throughput manufacturing, and after-sales support.
Our specialized product lines—including copper filter driers, check valves, AC service valves, high-efficiency wire tube outdoor condensers, brass and copper structural components, and high-vacuum refrigeration pumps—serve as the vital baseline of modern thermodynamic cycles. Recognized as a national High-Tech Enterprise in 2021, Taojun holds certifications including ISO 9001:2015, IATF 16949, EU RoHS environmental compliance, and US UL security certifications.
Ningbo’s massive manufacturing industrial cluster delivers unparalleled raw material optimization, logistics advantages, and highly specialized automation.
By operating directly in Ningbo, we sit in the geographical center of China's premium raw copper, aluminum extrusion, and precision electrical motor supply chains. This minimizes internal logistics latency and guarantees direct cost savings that we pass to our wholesale distributors.
Our strong partnership with the University of Science and Technology of China (USTC) and Zhejiang University provides us with unparalleled mechanical design support, giving us the ability to quickly develop smart, customized, and aerodynamic thermal solutions.
Our Quality Assurance protocols are built to exceed normal factory checks. From 500-hour environmental endurance testing (high/low temp at 75°C and -35°C) to 100V high-voltage insulation tests and helium leak detection, our products maintain a remarkable 99.95% acceptance rate.
To ensure stability in demanding conditions, outdoor condensers must be built with resilient structural frames, precision copper geometries, and advanced dry desiccant cores.
| Component Category | Structural Sub-Component | Core Material Specifications | Performance Benchmark Metric |
|---|---|---|---|
| Outdoor Condensers | Wire-on-Tube / Bundy Tube | Low-Carbon Alloy Steel / Copper Clad | Helium Leakage ≤ 1x10⁻⁷ mbar·l/s |
| Filter Driers | Solid Core / Molecular Sieve | High Purity Copper Shell + 3A Desiccant | Water Absorption Capacity ≥ 20% |
| Service Valves | L-Bend Split Service Valve | HPb59-1 Brass / Copper Joint Extension | Burst Pressure Rating ≥ 12.5 MPa |
| Vacuum Pumps | Single-Stage Rotary Vane | Cast Iron Housing + Universal Motors | Ultimate Vacuum Depth: 5 Pa |
We partner with leading domestic and international brands like Haier, Midea, Gree, Whirlpool, Electrolux, and Huarui to deliver tailored OEM/ODM solutions.
We adapt tube geometries, bracket profiles, and filter drier volumes to match specific compressor configurations. Our flexible design service supports rapid prototyping with a 500-unit MOQ.
All raw material inputs are tracked to meet RoHS, REACH, and WEEE requirements. This ensures our components comply with strict environmental standards in the EU and North American markets.
Our production floor operates on a real-time MES (Manufacturing Execution System) to coordinate automated brazing, cleaning, drying, and pressure testing, ensuring consistent quality.
Our components are engineered for optimal performance across a range of cooling and heating environments.
Our compact copper filter driers (10g, 15g, 20g) protect household refrigerator compressors from moisture and harmful contaminants, ensuring long-term system reliability.
Our high-capacity solid core filter driers and wire-tube condensers help maintain stable temperatures and energy-efficient operation in supermarkets and food storage facilities.
Designed to withstand harsh outdoor conditions, our wall-mounted AC brackets and corrosion-resistant condensers support optimal heat exchange and structural durability.
Featuring high-purity copper joints and robust split service valves, our products handle high vibration and pressure shifts in automotive and industrial systems.
Operating under GB/T19001-2016/ISO9001:2015 standards (Registration No: 41325Q00065R0S), our quality systems are verified by China's CNCA. We enforce strict incoming material checks, monitoring copper purity, molecular sieve density, and welding wire composition.
To support international distribution, we provide full certification trails, RoHS compatibility sheets, UL certificates, and REACH registration documentation.
Main ISO Certificate
Scope Certification
From our beginnings as a university research workshop to our position as a global High-Tech supplier, Taojun has stayed focused on precision refrigeration design.
Established as the Xiangshan Refrigeration Accessories Factory of Zhejiang University. Our early efforts focused on domestic filter drier R&D and developing custom designs for state-owned industrial factories.
Constructed dedicated industrial workshops to separate our copper extrusion, wire assembly, and vacuum pump lines, helping us scale to meet growing regional market demands.
Upgraded our facility with an MES digital workshop management system and secured ISO 9001:2008 and EU RoHS compliance to support our growing export business.
Officially launched the "Taojun" brand for condensers and stop valves. In 2021, our R&D focus and manufacturing upgrades earned us national High-Tech Enterprise status.
Optimizing our lines for environmentally friendly refrigerants (like R32, R290, CO2) and developing low-carbon materials to help global partners meet their sustainability goals.
To ensure our products withstand tough environments, they undergo extensive laboratory testing before shipping.
Parts are rapidly cycled between 90°C and -10°C over 500 hours to ensure welding points and material seals remain fully intact.
Every condenser is pressurized to 4.5 MPa, followed by automated helium vacuum tests to prevent micro-leaks in the field.
Copper filter driers are vacuum-baked and sealed in moisture-barrier packaging, preserving their absorption capacity until installation.
Common questions from procurement managers and HVAC engineers about sourcing outdoor condensers and parts.
View our selection of specialized tubing, filters, and vacuum equipment.
Taojun