The global cooling landscape is undergoing a monumental paradigm shift. Under the strict mandates of the EU F-Gas Regulation (EU) 573/2024 and the international Kigali Amendment, traditional synthetic hydrofluorocarbons (HFCs) are being phased out rapidly. In their place, Carbon Dioxide (R744) has emerged as the definitive long-term solution for sustainable, zero-ODP (Ozone Depletion Potential), and near-zero GWP (Global Warming Potential = 1) thermal management.
However, R744 cycles—especially transcritical configurations—operate under significantly higher pressures compared to traditional HFC systems, often exceeding 120 bar. This necessitates exceptionally engineered heat exchange systems. Global leading CO2 condenser factories must not only offer robust mechanical structural integrity but must also engineer their microchannel profiles and gas coolers to achieve peak thermal-hydraulic performance under highly turbulent flow regimes.
Ningbo Taojun Refrigeration Equipment Co., Ltd. is located in Xiangshan, Ningbo, a highly connected industrial hub. Founded in 1988, our predecessor was the Xiangshan Refrigeration Accessories Factory of Zhejiang University. Over the past 30+ years, we have grown into a national high-tech enterprise integrating design, development, high-volume production, global supply chains, and technical consulting.
Our leading products include high-pressure filter driers, check valves, custom air conditioning valves, wire-on-tube and finned tube condensers, brass/copper pipe fittings, and key accessories required for transcritical CO2 and general refrigeration cycles. In 2021, Taojun was formally recognized as a National High-Tech Enterprise in China, affirming our commit to technical excellence, processes innovation, and high-performance equipment upgrades.
With an active R&D center composed of engineers, doctorate holders, and professors from the prestigious University of Science and Technology of China (USTC), we maintain an institutionalized framework for material science and thermodynamics research, producing components certified under ISO 9001:2015, EU RoHS, and US UL directives.
Taojun specializes in the design and production of HVACR components. We supply copper filter driers, high-performance condensers, access valves, and complex capillary configurations engineered to absorb system moisture and acids while maintaining cycle integrity.
Designed with high-purity copper shells, integrated with 3A molecular sieves (water adsorption index ≥20%) and activated carbon layers. Standard operating limits are engineered to protect domestic and commercial compressors from corrosive acid moisture.
Engineered for next-gen refrigerants including R744, R290, and R600a. Our condensers employ microchannel tube configurations and durable fin alignments that maximize sensible heat rejection under extreme pressure differentials.
Utilizing premium brass bar-stock designs and automated silver-brazing assembly lines, our split service valves, access valves, and custom U-bends guarantee hermetic sealing with zero leak rates under rigorous Helium mass spectrometer testing.
Molecular Sieve Insertion
Precision Pipe Bending
Online Helium Leak Check
High-Vacuum Dry Out Oven
Final Anodized Finish Inspections
Our core production machinery is imported directly from Germany, ensuring precise tolerance controls down to ±0.02mm, maintaining microchannel thin-wall integrity under 130+ bar burst pressure tests.
A specialized product development team of 15 engineers, collaborating with materials-scientists and thermodynamic specialists from the University of Science and Technology of China (USTC).
We work alongside global OEMs to design custom lengths, specific volumetric profiles, and customized connection geometry. Rapid prototyping is available within 72 hours for custom design validation.
All core raw materials (ITO film, liquid crystal spacers, copper pipes) are sourced under strict supplier frameworks. Raw materials are imported from trusted partners in Japan and Europe to guarantee zero chemical degradation.
High & low temperature thermal shock testing ranging from -35°C to 75°C for 500 consecutive hours. Moisture-removal processes are conducted in automated vacuum baking ovens to ensure desiccant drying efficiency.
From commercial supermarkets utilizing transcritical CO2 rack designs to residential refrigeration units, our high-pressure components ensure absolute efficiency under all climatic conditions.
High thermal loads in hypermarkets and distribution hubs require R744 gas coolers that withstand peak ambient temperatures. Our copper U-bends and access valves handle gas cooling phases without leakage.
Ammonia and CO2 cascade systems require components with high corrosion resistance. Taojun copper filter driers absorb trace moisture, eliminating acidic corrosion inside industrial evaporators.
The rise of electric vehicles has driven the transition to CO2 heat pump systems. Compact, lightweight wire-on-tube condensers and vibration-resistant brass brackets ensure system longevity.
Our engineering laboratory, in collaboration with Zhejiang University, focuses on the following research frontiers to maintain Taojun’s competitive edge:
Established as the Xiangshan Refrigeration Accessories Factory of Zhejiang University. Commenced fundamental research into thermodynamic component geometries and commercial capillary tube systems.
Constructed dedicated plant facilities. Expanded into high-volume domestic manufacturing lines for copper filters and custom brackets, establishing strict ISO assembly standards.
Deployed computerized MES workshop management workflows. Introduced inline defect scanning, CCD visual inspections, and high-vacuum drying procedures to ensure moisture removal.
Commercialized a full range of high-pressure components compatible with R744 cycles. Strengthened global OEM supply contracts with major consumer appliance brands.
A global brand is built upon a strong corporate culture. Ningbo Taojun’s foundation is built upon four pillars: Honesty, Innovation, Responsibility, and Cooperation. Our mission is to provide global HVACR OEMs with robust, high-performance parts that facilitate the clean energy transition.
As an ISO-certified manufacturer (Registration No.: 41325Q00065R0S), our production lines comply with strict global safety directives. Our operations are fully verifiable via the Certification and Accreditation Administration of the People's Republic of China (CNCA).
For buyers seeking stable refrigeration component solutions, Ningbo Taojun delivers high precision, batch-to-batch consistency, and supply chain security. From customized copper U-bends to microchannel condenser assemblies, we provide:
Equipped with imported CNC tubing lines and high-frequency automated induction brazing stations to ensure clean joints and uniform wall thicknesses.
Optimized assembly flows with inline Helium mass spectrometer leak detectors, maintaining leak-free joints under high operating pressures.
Equipped with thermal-cycling chambers and vibration-testing rigs, validating component reliability under long-term cyclical stresses.
Taojun