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A Comprehensive Industry White Paper on Advanced Signal Switching, Low-Power Relays, and High-Performance Environmental Control Loop Technologies.
In modern industrial automation, HVAC system loops, and smart home appliances, the integration of advanced Signal Relays acts as the central neurological control hub. These low-profile electromechanical components are engineered for switching high-frequency, low-current signals with minimal insertion loss and contact bounce. Our developmental roadmap focuses on addressing three key dimensions of relay engineering:
Integrating mechanical control valves and switching apparatus creates complete ecosystem loops. High-performance refrigeration systems demand a synchronized response between electrical switching relays and mechanical copper piping components:
Operating from our primary manufacturing base in Xiangshan, Ningbo, Taojun Refrigeration Equipment relies on cutting-edge German-engineered production machinery and integrated Manufacturing Execution Systems (MES) to maintain seamless operational tracking. By adopting advanced automation, we deliver significant competitive advantages:
Our raw material supply chain ensures maximum reliability by sourcing key elements internationally: high-precision ITO films and liquid crystal spacers are imported from Japan, while advanced chemical adhesives are sourced from European manufacturers. Coupled with real-time CCD visual inspection and helium leak testing for all welded assemblies, we guarantee zero breakdown during field operations.
Ningbo Taojun Refrigeration Equipment Co., Ltd. is located in Xiangshan, Ningbo, a beautiful tourist city. Founded in 1988, its predecessor was Xiangshan Refrigeration Accessories Factory of Zhejiang University. The company's leading products include: filter driers, check valves, air conditioning valves, condensers, brass and copper accessories, air conditioning cable ties and other refrigeration accessories series products. After 30 years of hard work and rapid development, it has now become a comprehensive enterprise integrating the design and development, production and sales, and after-sales service of refrigeration accessories. In 2021, it became a national high-tech enterprise. Our company is committed to technological and process innovation, equipment improvement, and the introduction of advanced management concepts to produce first-class products. Customer satisfaction is our unwavering pursuit. With reasonable design, reliable quality, and perfect after-sales service, the "Lingshan" filter has become a well-known brand in the domestic refrigeration industry. The company has successively passed ISO9001:2008 quality management system certification, EU ROHS environmental protection directive certification, and US UL certification. The company always takes customer needs as the basis and continuously innovates management concepts to ensure efficient and stable development.
In 2012, Ningbo Taojun Refrigeration Equipment Co., Ltd. was established, creating the brand "Taojun" condensers, "Taojun" stop valves and other series of products. Over the years, it has established partnerships with well-known domestic and foreign home appliance enterprises such as Haier, Xinfei, Midea, Gree, Whirlpool, Electrolux, and Huarui. The product sales network covers major and medium-sized cities in China and is exported to Europe, America, South America, Southeast Asia, the Middle East, Africa and other overseas markets. The company's goal is to support and cooperate with every sincere customer to achieve a win-win situation.
Specialized in high-grade refrigeration component manufacturing for 38 years. Our solutions ensure clean, dry, and reliable HVAC operations.
Taojun is specialized in refrigeration parts 38 years: filter drier, access valve, condenser. Feature: TAOJUN copper filter driers are designed to absorb moisture and acid, and to filter out impurities. Normally be installed as component and replaced as repair part for both domestic and commercial refrigerators, freezers.
A combination of elite engineering backgrounds, strict raw material selection, and rigorous reliability testing.
Our core manufacturing equipment is imported directly from Germany.
We have 15 engineers in our R&D centre, all of them are doctors or professors from University of Science and Technology of China.
Customized sizes and shapes are available. Welcome to share your idea with us, let's work together to make life more creative.
Core Raw Material. Our ITO film (no shrinkage, no color difference) and liquid crystal spacer (excellent uniformity) are imported directly from Japan; glue is imported directly from Europe; our liquid crystal temperature range is 70°C and protective film is resistant to high temperature 80-90°C.
Finished Products Testing. High & low temperature test at 75°C and -35°C for 500 hours; thermal shock test 10°C-90°C for 30 minutes; damp heat test for 500 hours; moisture removed by oven; smart films in sheet are powered by a 24-hour aging test; smart films in roll are tested with 100V high voltage to make sure zero breakdown.
TAOJUN was established in 1988 and has been producing copper filter driers for 41 years (including original factory predecessor). We have domestic leading research and development ability in refrigeration parts, as well as industry-advanced level in refrigeration parts, quality control abilities. Since started, Taojun's competitive edge is always driven by technology.
TAOJUN copper filter driers are designed to absorb moisture and acid, and to filter out impurities. Normally be installed as component and replaced as repair part for both domestic and commercial refrigerators, freezers.
✓ Shell: high purity copper pipe (rust resistant, high pressure resistant)
✓ Inner core: 3A molecular sieve (water absorption ≥20%) + activated carbon layer
✓ Sealing process: argon arc welding to ensure no leakage
✓ Prolong the life of the equipment: reduce the corrosion of water and acidic substances on the compressor
✓ Fast cooling: reduce system resistance and improve refrigerant cycle efficiency
✓ Widely used: household refrigerator, commercial cold storage, car air conditioning can be used
✓ Refrigerator/freezer repair and replacement
✓ Air conditioning system maintenance and upgrade
✓ Industrial refrigeration equipment maintenance
A steady timeline of structural expansion, smart system implementation, and capacity scaling.
Our Factory Building Expansion & Initial Infrastructure Upgrades.
Deployment of MES Intelligent Workshop Management System.
Global Strategic Smart Signal Relay Integration Initiative Launched.
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, Cooperation.
Our group always adheres to the principle: people-oriented, integrity management, quality utmost, premium reputation. Honesty has become the real source of our group's competitive edge.
Innovation is the essence of our group culture. Innovation leads to development, which leads to increased strength. Our people make innovations in concept, mechanism, technology, and management.
Responsibility enables one to have perseverance. Our group has a strong sense of responsibility and mission for clients and society.
Cooperation is the source of development. We strive to build a cooperative group and work together to create a win-win situation.
Serving multiple global industries ranging from domestic appliances to heavy industrial refrigeration installations.
For Precision Refrigeration Components (Filter Driers, Condensers, Access Valves)
Main Certification Document
Detailed Scope of Certification
Juntao Refrigeration (NINGBO TAOJUN REFRIGERATION EQUIPMENT CO., LTD.) stands as a globally recognized leader in the design and production of critical refrigeration components.
With our official GB/T19001-2016/ISO9001:2015 certification (Registration No.: 41325Q00065R0S), we demonstrate uncompromising commitment to quality in manufacturing filter driers, condensers, and access valves. This certification, verifiable via China's CNCA (www.cnca.gov.cn) and our partner Zhongci International (www.zcgirz.com), validates our advanced OEM and ODM capabilities for clients worldwide. For partners seeking reliable refrigeration component solutions, Juntao delivers innovation, precision, and supply chain security from our ISO-certified facility in Zhejiang, China.
Unmatched strengths in technical precision, compliance, global supply chains, and customer satisfaction.
35+ years of R&D expertise with Zhejiang University collaboration.
ISO 9001, IATF 16949 certified; 5D quality system (0.05% defect rate).
50+ country network; partnerships with Haier, Midea, Whirlpool.
OEM/ODM support; 500-unit MOQ; 72-hour global delivery.
RoHS, REACH, WEEE certified; 100% recyclable packaging.
MES system, CCD visual inspection, helium leak testing.
98.6% satisfaction (2023); 24-hour complaint resolution.
±0.02mm aluminum foil tolerance; 10-year lifespan testing.
Smart product innovation; green manufacturing for industry sustainability.
Peek inside our high-tech workshop, testing lab, and cleanroom assembly spaces.
Explore specialized industrial and commercial solutions.
The product sales network covers major and medium-sized cities in China and is exported to Europe, America, South America, Southeast Asia, the Middle East, Africa and other overseas markets. Our goal is to support and cooperate with every sincere customer to achieve a win-win situation.
Technical answers to support engineering evaluation and bulk procurement procurement decisions.
Access our complete list of active manufacturing catalogs. Retaining original design architecture.
Taojun
