High-precision manufactured core systems designed to integrate seamlessly with standard commercial and residential refrigeration relays.
Understanding the foundational role of starter relays and matching components in global HVAC/R automation.
The global commercial and industrial refrigeration market is experiencing unprecedented demand for high-reliability electrical switching devices, particularly compressor start relays (such as PTCR, potential, and current relays). In modern refrigeration engineering, a relay acts as the vital control hub, facilitating safe startup sequences for induction motors under high load pressures. When matched with optimal compressors and inline protection devices like copper filter driers, these setups protect the motor winding from overheating and minimize standard failure rates.
In regions such as North America and the European Union, stringent energy compliance mandates (including the EU's Ecodesign Directive and US DOE efficiency benchmarks) are pushing factories to redesign components for compatibility with low-GWP (Global Warming Potential) refrigerants like R290 (propane) and CO2. Consequently, wholesale buyers are prioritizing factories that demonstrate advanced capabilities in anti-arc, hermetically-sealed relay configurations and moisture-purification accessories, which mitigate safety risks associated with natural refrigerants.
A compressor's lifetime is highly dependent on its initial starting torque, managed by starter relays. However, moisture or debris entering the line can lead to mechanical lock-ups and relay contacts fusing. Utilizing a high-purity copper filter drier directly upstream is essential for capturing ambient moisture, safeguarding the compressor motor, and ensuring the relay does not cycle repeatedly under thermal overload conditions.
Founded in 1988, integrating academic research with modern industrial manufacturing.
Ningbo Taojun Refrigeration Equipment Co., Ltd. (located in Xiangshan, Ningbo, China) was established in 1988. Our journey began as the Xiangshan Refrigeration Accessories Factory of Zhejiang University. Over the last 30+ years, our continuous growth has allowed us to develop into a comprehensive high-tech enterprise integrating R&D, mass production, export sales, and technical support.
Our catalog includes: copper filter driers, check valves, air conditioning valves, condensers, brass and copper accessories, charging lines, and custom HVAC/R system parts. Recognized as a national high-tech enterprise in 2021, we deploy advanced production methodologies to support domestic and international partners, facilitating seamless partnerships with industry leaders like Haier, Midea, Gree, Whirlpool, Electrolux, and Huarui.
The convergence of smart electronics, solid-state relays, and clean fluid dynamics in HVAC/R design.
Transitioning from mechanical starter switches to Solid-State Relays (SSR) with integrated PTC chips. Eliminates physical contact wear, prevents electric sparking in explosive environments (essential for R290 units), and reduces electromotive noise.
Optimizing thermodynamic performance using mini-channel and micro-channel copper systems to minimize refrigerant charging weights. Keeps pressures stable and lowers starting load current, extending relay lifespan.
Developing molecular sieve dry filters integrated with internal chemical indicator layers and smart sensors to monitor moisture saturation and direct potential relay shutdowns before compressor failure occurs.
As IoT technologies integrate with standard industrial refrigeration boards, relays will morph into diagnostic nodes that track starting current profiles. The physical lines must match this precision—using 100% leak-tested valves and copper accumulators to prevent pressure spikes that cause relays to trigger prematurely.
How our integrated HVAC/R control solutions are deployed in various environments globally.
High-capacity scroll compressors require high-voltage thermal-magnetic starter relays. Our solid-core molecular sieve liquid line filter driers ensure that zero moisture interacts with expansion valves, preventing costly freeze-ups and relay failures.
Rapid cycle times place heavy demands on compressor relays. The installation of customized 10g/15g copper dryers prevents particulate scaling and maintains the stability of the refrigerant charge under high starting pressure loads.
Modern home systems rely on electronic expansion valves and relays to adjust cooling dynamically. Our high-purity copper split service valves are essential for system vacuum sealing and pressure testing during setup, preventing air intrusion.
Why sourcing from Taojun's Chinese facility provides a competitive global advantage.
A globally recognized brand built on a foundation of dedicated engineering, research, and collaboration.
We understand that an enduring corporate culture is formed through long-term development and continuous learning. Over the past decades, our growth has been guided by four core values:
With an engineering center composed of 15 R&D engineers—including researchers and PhD graduates from the University of Science and Technology of China—we develop customized shapes, sizes, and configurations to meet unique client needs.
Verified manufacturing processes that meet international safety, quality, and environmental regulations.
Taojun (Ningbo Taojun Refrigeration Equipment Co., Ltd.) maintains certified quality control procedures under GB/T19001-2016/ISO9001:2015 standards (Registration No.: 41325Q00065R0S). Our scope covers the design, manufacture, and distribution of dry filters, condensers, and service access valves.
Our products comply with European environmental regulations, including the RoHS and REACH directives, as well as holding UL listings in the United States. Through partnerships with certified testing centers, we confirm that our products meet the low leak rates and pressure resistance standards required for modern refrigeration systems.
Our technical sales engineering team offers detailed consultation support. We provide a 24-hour service hotline with an 8-hour response guarantee for troubleshooting assistance. Additionally, our products include a one-year warranty alongside lifetime technical support.
ISO 9001 Certificate
Detailed Scope Document
A visual tour of our production facilities and testing laboratories.
Equipped with automated manufacturing systems and testing machinery.
Strict assembly processes that minimize particulate and moisture entry.
Specialized testing setups evaluate pressure resistance and environmental tolerance limits.
Technical and logistics questions answered by our engineering and supply chain teams.
High-durability accessories, custom fittings, and vacuum line tools for professional cooling setups.
Taojun