Engineered with micro-precision. Browse our top-tier condenser assemblies, filter driers, and refrigerant flow controllers.
Located in the scenic coastal city of Xiangshan, Ningbo, Ningbo Taojun Refrigeration Equipment Co., Ltd. was established in 1988. Our journey began as the Xiangshan Refrigeration Accessories Factory, established in technical partnership with the prestigious Zhejiang University. For over three decades, we have evolved into an enterprise integrating advanced thermal engineering, OEM/ODM production, and worldwide commercial distribution.
We specialize in manufacturing critical cooling accessories, including high-performance heat condensers, copper filter driers, mechanical stop valves, and precision brass fittings. In 2021, Taojun was recognized as a National High-Tech Enterprise, acknowledging our focus on process automation, quality systems, and patent development.
Our core brand "Lingshan" has established itself within China's domestic HVAC networks. To better serve international OEMs and tier-1 distributors, we launched the "Taojun" international brand in 2012, aligning our engineering processes with global certifications including ISO 9001:2015, EU RoHS, REACH, and UL.
Addressing thermodynamic challenges, system contamination control, and structural integrity in modern refrigeration loops.
Modern commercial and residential HVAC/R designs operate under strict global regulatory frameworks such as the F-Gas regulation in Europe and EPA Section 608 in the USA. These frameworks demand transition to low-GWP (Global Warming Potential) refrigerants such as R32, R290 (propane), and CO2 (R744). These refrigerants exhibit higher working pressures and require enhanced heat transfer efficiency to maintain COP (Coefficient of Performance) ratings.
Ningbo Taojun's latest condenser designs leverage high-density internal micro-grooving and optimized fin structures to minimize refrigerant charge while maximizing heat rejection rates. Our co-development program with the University of Science and Technology of China has yielded advanced computational fluid dynamics (CFD) models, allowing us to balance pressure drops and heat transfer coefficients across complex cooling cycles.
Compressor failure is frequently traced to chemical reactions driven by moisture, acids, and solid particulate residues within the refrigerant loop. Hydrolytic degradation of POE and PAG oils releases corrosive acids, leading to winding damage and motor burnouts.
TAOJUN's high-purity copper filter driers utilize a premium dual-active matrix core:
A refrigeration circuit is only as reliable as its joints. The junction of copper piping with dissimilar metals, such as stainless steel heat exchangers or aluminum evaporator tubes, presents galvanic corrosion risks and mechanical stress zones under continuous thermal cycling.
To address this, Taojun designs and supplies specialized silver-phosphorus brazing rods (5%, 10%, 15% silver alloy options). Silver addition lowers the liquidus temperature, increases joint ductility, and enhances penetration behavior into capillary gaps. Additionally, our automated argon-arc welding stations ensure gas-tight hermetic seals, and our helium mass spectrometer leak detection system tests each assembly under high-pressure conditions to achieve a zero-leak performance target.
To sustain supply chain reliability for multinational partners like Haier, Midea, Gree, Whirlpool, and Electrolux, Taojun enforces strict process validation. Incoming raw material testing includes copper spectrographic purity analysis and microscopic wall thickness inspection.
Finished products undergo accelerated environmental stress testing:
Step inside Ningbo Taojun's production facility. We combine MES intelligent tracking with raw material controls.
Our core precision bending, tooling, and extrusion machinery is directly imported from German manufacturers to achieve structural dimensional tolerances of ±0.02mm.
Backed by 15 engineering doctors and professors, our dedicated thermal laboratory models heat exchanger dynamics under complex load states.
We deploy CCD visual defect inspection, automated moisture purging ovens, and high-vacuum helium mass spectrometer leak detection on the factory floor.
Trace our path from a local refrigeration accessory factory to an ISO-certified global vendor.
Established as Xiangshan Refrigeration Accessories Factory of Zhejiang University. Developed high-efficiency filters and copper components for local air conditioning networks.
Introduced MES intelligent workshop management systems. Launched the international brand "Taojun" and established partnerships with major home appliance enterprises (Haier, Midea, Whirlpool, Electrolux).
Attained National High-Tech Enterprise certification. Upgraded cleanrooms for R290 and CO2 compatible components, supporting eco-friendly global HVAC solutions.
Our engineered thermal exchange solutions are deployed in various environments.
Precision-made copper filter driers, brass equal tees, and access valves optimized for household refrigerators and split air conditioners to ensure long-term durability.
High-rejection heat condensers and large-capacity molecular sieve driers engineered for supermarket display cases, walk-in freezers, and ice makers.
Heavy-duty, vibration-resistant charging hoses, brazed manifolds, and check valves designed for harsh chemical environments and high-pressure liquid lines.
Verifiable compliance frameworks confirming manufacturing excellence and international standards.
Main ISO 9001 Certificate Document
Official Scope: Design & Production of Filter Driers, Condensers, and Access Valves
Ningbo Taojun operates under the internationally recognized GB/T19001-2016 / ISO9001:2015 standard (Registration No: 41325Q00065R0S). This quality management system guides all manufacturing activities from contract review to post-delivery support. Our compliance with EU RoHS and REACH regulations ensures that all materials, including copper, brass alloys, desiccant materials, and silver brazing rods, are free from hazardous substances.
Additionally, our products hold US UL certification, confirming compliance with American fire and electrical safety standards. This framework allows our customers to integrate our parts into their cooling equipment without facing regulatory delays.
Our global service network supports your team through product design and installation troubleshooting.
Work directly with engineers with 15+ years of pump and refrigeration experience. We assist with fluid dynamics, material compatibility, and pressure drop profiling within 8 hours of your inquiry.
We provide design tailoring, custom-machined end connectors, specialized molecular sieve mixtures, and customized tube configurations. Minimum order quantities (MOQ) start at 500 units.
Our products come with a one-year warranty, which includes performance testing support and troubleshooting help. We also offer lifetime engineering support to adapt to future refrigeration systems.
Addressing technical questions about copper selection, desiccant performance, and joint design in cooling systems.
Maintain system performance with our certified brazing alloys, charging hoses, and control electronics.
Taojun