Founded in 1988 as the Xiangshan Refrigeration Accessories Factory of Zhejiang University, Ningbo Taojun Refrigeration Equipment Co., Ltd. has evolved into a global leader in designing, manufacturing, and supplying critical refrigeration system components. Based in Xiangshan, Ningbo, our enterprise spans 38 years of research-backed manufacturing, successfully integrating academic theory with advanced factory execution.
Our product lineup features high-quality wire-on-tube condensers, copper filter driers, check valves, air conditioning access valves, and specialized brass fittings. Through constant material optimization and technological upgrades, we earned status as a national high-tech enterprise in 2021. With certifications including ISO 9001:2015, EU RoHS, and US UL compliance, Taojun ensures your supply chain remains robust and fully compliant with international quality mandates.
Our core production units, automated wire welding lines, and high-precision bending machinery are imported directly from Germany, ensuring sub-millimeter tolerances on tube alignments.
Our R&D center is backed by 15 senior thermodynamic engineers, collaborating with researchers from the University of Science and Technology of China to push thermal efficiency boundaries.
We perform 500-hour thermal shock trials (10°C to 90°C), damp heat tests, and high-sensitivity helium leak tests down to 100V high-voltage breakdowns for electronic controllers.
We support fully customizable wire pitch, overall tube layout, dimensions, and inlet/outlet connector configurations to align with residential or industrial refrigeration footprints.
Implemented in 2008, our MES (Manufacturing Execution System) provides real-time oversight of raw material usage, cycle times, and welding quality. This data-first structure prevents material waste and allows trace-level visibility from crude raw materials to end-delivery packages.
Our steel tube bending centers utilize multi-plane CNC machines. This guarantees a continuous, smooth internal passage preventing refrigerant stagnation points while ensuring uniform distance between wire rows for standardized natural air circulation.
Equipped with state-of-the-art electrophoretic painting lines, our wire tube condensers receive a uniform cathodic epoxy resin coating. Testing verifies this layer withstands standard salt spray testing protocols (ASTM B117) exceeding 500 hours without superficial rust.
With global shifts toward low-GWP agents like R290 (Propane) and R600a (Isobutane), our R&D is optimizing internal volume limits. Minimizing structural volume reduces overall refrigerant charge requirements while keeping safety thresholds compliant with European F-Gas regulations.
Currently in pilot phase testing, our engineering group is analyzing graphene-composite paint layers. This breakthrough seeks to enhance the thermal radiative heat transfer coefficient of carbon steel wire, reducing active condenser lengths by up to 12%.
Moving beyond classic wire tube designs, our factory is integrating multi-port microchannel aluminum structures. These lightweight assemblies provide alternative premium cooling strategies for space-constrained cooling designs.
Large-scale supply agreements with brands like Haier, Midea, and Whirlpool. High-volume delivery of standard static-cooling wire tube condensers designed for back-panel installation on household refrigerators and deep chest freezers.
Heavy-duty condensers tailored for automated ice makers, supermarkets, and smart vending machines. Features robust tube wall thicknesses that resist high operating pressures associated with fluctuating commercial workloads.
Custom heat-exchanger modules for telecommunication enclosures and industrial machinery control booths. Proven designs that function under dusty, high-vibration, and elevated ambient temperature conditions.
Ningbo Taojun Refrigeration operates under registration number 41325Q00065R0S, conforming to the GB/T19001-2016 / ISO9001:2015 standards. Verification is queryable via the CNCA platform.
ISO 9001 Certification
Certification Details
Quality Verification Audit
Consult with engineering specialists who average 15+ years of pump and condenser design experience. We review thermal dissipation specifications, design mockups, and optimize tube dimensions before batch production.
Our sales support desk remains on call 24 hours a day. All pricing inquiries, product design reviews, and engineering updates receive detailed responses within 8 hours.
All OEM parts come with a 1-year product warranty. We archive mechanical blueprints for 10 years to ensure exact alignment and dimension compatibility on future replacement orders.
We typically utilize Bundy tubes (welded steel tubes coated with copper) with outer diameters ranging from 4.8mm to 6.35mm, and wall thicknesses of 0.5m to 0.7mm. The low-carbon steel wire has a wire diameter of 1.2mm to 1.6mm, laid out and welded on both sides to achieve maximum rigidity and heat dissipation efficiency.
Every condenser circuit goes through online high-pressure nitrogen testing followed by helium vacuum detection down to 1x10^-6 mbar.l/s. We employ automated argon arc welding and automatic brazing machines, minimizing manual welding errors to guarantee leak-free operation over a 10-year design life.
Yes. Through our ODM/OEM workflow, clients only need to share a 3D CAD drawing, mechanical drawing, or physical sample. Our engineering team can mock up prototype designs within 72 hours, adjusting the mounting brackets, inlet/outlet sizing, and wire pitch to match your installation requirements.
For standard environments, we provide electrophoretic black paint coatings. For highly humid, coastal, or maritime refrigeration applications, we offer double-layered cathodic coatings and graphene-infused topcoats that extend ASTM B117 salt spray resistance beyond 500 hours.
Our tubes undergo internal chemical flushing and high-temperature vacuum drying, keeping residual moisture below 20 mg/m² and internal dust particles below 10 mg/m². The tube ends are sealed with tight plastic caps immediately after testing to prevent humidity ingress during shipping and storage.
Taojun
