Featured wholesale products from our certified China production facility
Optimized for thermal dynamic efficiency, global standardization, and long-term durability
Designed specifically to handle high-pressure refrigerants like R410A, R32, and R744 (CO2). The 7/8" outer diameter ACR piping offers optimal wall thickness and metallurgy to prevent structural failures, bursting, or micro-cracks under peak operating stress.
Every batch of our 7/8 copper components meets strict inner surface cleanliness criteria defined by ASTM B280 and EN 12735-1. This prevents compressor carbonization, oil contamination, and capillary tube blockages.
ACR copper components feature optimized heat dissipation profiles. Advanced inner-grooved options maximize contact area and turbulent flow, leading to up to a 15% reduction in overall system energy consumption.
Ningbo Taojun Refrigeration Equipment Co., Ltd. is located in Xiangshan, Ningbo, a beautiful tourist city. Founded in 1988, its predecessor was the Xiangshan Refrigeration Accessories Factory of Zhejiang University. With over 30 years of continuous growth, we have developed into a comprehensive enterprise integrating design, R&D, manufacturing, sales, and dedicated after-sales services for refrigeration components.
In 2021, the company was officially designated as a National High-Tech Enterprise. Under the well-known domestic brands "Lingshan" and "Taojun", we manufacture and supply filter driers, check valves, air conditioning valves, condensers, brass and copper accessories, and cabling solutions worldwide. Our factory is certified under ISO9001:2015, EU RoHS, REACH, WEEE, and US UL.
Factory Overview: 38 Years of Continuous Innovations in Refrigeration & HVAC Manufacturing
Supporting transition to high-efficiency, ecological systems in key international markets
Europe's shifting legislation regarding synthetic refrigerants has triggered a mass transition towards natural refrigerants like R290 (propane) and transcritical R744 (CO2). As a primary structural component in these systems, ACR copper parts must resist higher working pressures. Taojun's 7/8 copper parts provide high mechanical integrity and are compliant with EN 12735 standards, making them a preferred choice for European commercial heat pump manufacturers.
In large-scale commercial infrastructures, hotels, and office complexes across North America and Asia-Pacific, multi-split VRF air conditioning installations utilize 7/8 ACR pipe networks as primary gas lines. Our tight control over concentricity, outer diameter dimensions, and grain structures ensures leak-proof brazing, preventing refrigerant depletion over long horizontal and vertical piping runs.
State-of-the-art facilities optimized for precision engineering and Zero-Defect rates
Our core production lines are supported by automated CNC machinery and specialized equipment imported directly from Germany. This machinery maintains tolerances down to ±0.02mm, ensuring consistent dimensions across mass-production batches.
Our engineering laboratory features 15 dedicated specialists, including Doctors and Professors from the University of Science and Technology of China (USTC). This academic cooperation drives continuous innovation in heat transfer, material grain size, and mechanical strength.
Our specialized raw materials are sourced internationally to maintain high product performance: advanced ITO films and uniform liquid crystal spacers are imported from Japan, while premium industrial adhesives are sourced from European partners.
Our finished components undergo strict validation testing: high/low-temperature cycles ranging from 75°C to -35°C for over 500 hours; 10°C–90°C thermal shocks for 30 minutes; and comprehensive humidity exposure to eliminate degradation risks.
To guarantee complete containment of high-pressure gases, our products are subjected to rigorous leak testing using Helium Mass Spectrometer detectors, complemented by 100V electrical breakdown verification for smart system controls.
Using our modern Manufacturing Execution System (MES) and CCD visual camera inspection systems, every single component is tracked throughout the production line to ensure consistent quality and product traceability.
Engineered solutions designed for critical residential, commercial, and marine installations
Employed directly within transport refrigeration and commercial supermarkets. Our copper filter driers absorb structural moisture and acids, preventing the freezing of expansion valves and protecting industrial compressors.
Constructed using corrosion-resistant C12200 phosphorus-deoxidized copper. These components are designed to withstand highly saline coastal and marine environments, resisting seawater degradation and oxidation.
Designed for long-distance piping distribution layouts in high-rise commercial office buildings. Provides structural reliability and clean interior surfaces to prevent compressor oil degradation.
Pioneering environment-conscious designs aligned with international emission standards
With standard working pressures of transcritical CO2 systems exceeding 120 bar, traditional copper properties are insufficient. Taojun is developing reinforced copper-iron alloy (CuFe2P) fittings and components. This metallurgical advance keeps the wall thickness thin and lightweight while providing the mechanical strength needed to withstand high operating pressures.
As an ISO 14001 compliant manufacturer, our production processes support eco-conscious manufacturing. Our copper products are 100% recyclable, and our packaging utilizes biodegradable, non-toxic materials. We are aligned with RoHS, REACH, and WEEE directives, helping global OEM manufacturers simplify their environmental reporting.
Premium wholesale parts optimized for industrial HVACR applications
Technical guidance from our senior engineering team on application, specifications, and installation
Taojun