Deploying intelligent, energy-saving configurations optimized for Japanese and global industrial standards. Direct factory sourcing with guaranteed durability.
Japan represents one of the most technologically advanced and regulatory-stringent HVAC markets in the world. Under the Ministry of Economy, Trade and Industry (METI) energy conservation frameworks and the demanding **Top Runner Program**, air conditioning manufacturers must continually push the boundaries of energy efficiency, known as the Annual Performance Factor (APF).
To achieve these efficiency metrics, air conditioning units are shifting from traditional on/off systems to highly responsive **Inverter-Driven Variable Frequency Controllers**. These micro-controller assemblies demand ultra-low latency sensor processing, precise vector frequency drive control, and seamless IoT compatibility with local smart home networks, including the ubiquitous ECHONET Lite standard.
Moreover, the Japanese market expects long operational lifetimes (typically exceeding 10 years without performance degradation) under challenging coastal environments prone to salt corrosion and high humidity. Consequently, PCBs and controller sub-assemblies must feature high-grade conformal coatings, robust EMI protection, and component integration designed to minimize system losses.
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. Our company's leading products include: filter driers, check valves, air conditioning valves, condensers, brass and copper accessories, air conditioning cable ties, and other comprehensive refrigeration accessory series.
After more than 30 years of hard work and rapid development, Taojun has evolved into a comprehensive high-tech enterprise integrating design, research and development, smart manufacturing, and global sales. In 2021, the company was officially certified as a National High-Tech Enterprise in China. With reasonable design, reliable quality, and perfect after-sales service, our "Lingshan" filter drier and refrigeration line components have become well-known brands in the domestic and global refrigeration industry.
To ensure high quality and standard alignment, the company has passed the ISO9001:2015 quality management system certification, EU RoHS environmental protection directive certification, and US UL certification. We continuously innovate our management concepts to provide efficient, reliable, and stable HVAC components for global markets, especially for Japanese HVAC systems requiring high precision.
Procurement teams face unprecedented supply chain disruptions, fluctuating copper and copper-alloy prices, and tightening international environmental targets.
HVAC controller manufacturing relies on stable access to microcontrollers (MCUs) and power modules. Managing component life-cycles and alternative board designs is critical to preventing assembly line downtime.
With global mandates shifting systems toward low-GWP refrigerants like R32, R454B, and R290, all system accessories (like filter driers and safety valves) must handle higher operational pressures and flammability parameters.
Entering the Japanese and EU markets requires strict adherence to REACH, RoHS, WEEE directives, and regional chemical safety norms. Complete compliance documentation is non-negotiable for Tier-1 OEMs.
Leveraging intelligent manufacturing grids to optimize lead times, reduce assembly defects, and minimize production costs.
Building on roots as the Xiangshan Refrigeration Accessories Factory of Zhejiang University, our engineers collaborate with premier domestic research labs, including doctors and professors from the University of Science and Technology of China (USTC). This academic foundation enables advanced thermodynamic simulations and electromagnetic compatibility (EMC) testing for our controller PCBs and heat transfer assemblies.
Implemented in 2008, our Manufacturing Execution System (MES) provides full end-to-end trace capability for materials and process variables. From raw copper tubing to final functional tests of frequency inverter PCBs, every batch carries a digitized footprint ensuring swift root-cause analysis and accountability.
By using CCD optical inspection, high-voltage electrical performance tests, and automated helium leak detection systems, we achieve a stable production defect rate below 0.05%, fulfilling the stringent requirements of Japanese partners such as Haier, Midea, Whirlpool, Electrolux, and domestic Japanese HVAC distributors.
Our core capabilities involve engineering integrated accessories that protect the compressor and optimize systemic efficiency. Combined with inverter PCBs, they guarantee the longevity of commercial systems.
Taojun copper filter driers are designed to absorb moisture and acid, and to filter out system impurities. Typically installed as a vital component in refrigeration lines and replaced during preventive maintenance of domestic and commercial refrigerators, freezers, and air conditioners.
Our frequency inverter control systems provide dynamic voltage/frequency adjustments to AC compressors, managing cooling outputs according to real-time indoor thermal loads.
Multi-split variable refrigerant flow (VRF) systems in dense Tokyo commercial centers. High-reliability inverters regulate multiple zone temperatures with dynamic control loops.
Providing low-temperature refrigeration control systems that maintain ultra-precise cold chains. Filter driers capture all trace moisture to prevent expansion valve icing.
Integrated solutions compliant with Japan's energy standards, keeping home microclimates steady in extreme summer temperatures and cold winters.
Building trust through continuous technology innovation, robust engineering processes, and win-win partnerships.
Established local factory buildings to expand manufacturing scale, serving domestic appliance manufacturers in east China.
Introduced real-time computer-assisted workshop management to track materials, assembly operations, and quality inspections.
Broadening international footprint by designing custom smart inverter control solutions tailored for climate applications across Japan and the EU.
A world brand is supported by a corporate culture. We fully understand that her corporate culture can only be formed through Impact, Infiltration, and Integration. The development of our group has been supported by her core values over the past years: Honesty, Innovation, Responsibility, and Cooperation.
We adhere to the principle of people-oriented, integrity management, and quality utmost. Innovation is the essence of our culture, prompting us to optimize concepts, mechanisms, manufacturing technology, and logistics structures to adapt to emerging strategic opportunities.
We hold a strong sense of responsibility toward clients and the HVAC industry. Through mutual integration of resources and technology sharing, we cooperate with global stakeholders to establish sustainable win-win operations.
For Precision Refrigeration Components including Filter Driers, Condensers, Access Valves
Main ISO Certification
Detailed Certification Scope
Juntao Refrigeration (Ningbo Taojun) is officially registered under standard GB/T19001-2016/ISO9001:2015 (No: 41325Q00065R0S). Verification is publicly accessible on the CNCA database (www.cnca.gov.cn) and through Zhongci International (www.zcgirz.com).
We provide specialized components optimized for industrial systems and residential units alike.
UL Safety Approval
EU RoHS Standard Compliant
CE Mark Certification
National High-Tech Enterprise
Fully static-controlled automated workshop for precision PCB mountings, visual cameras, and testing lines.
Standardized pipeline configurations ensuring low cycle time and zero-waste throughput optimizations.
Equipped with thermal chambers, high precision oscilloscopes, and vibration platforms for product reliability tests.
Detailed technical answers to procurement and reliability queries from engineering leads and industrial buyers.
Contact Ningbo Taojun today to discuss technical specifications, receive custom engineering drawings, or request samples for testing.
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