Engineered to handle extreme thermal stress, sandstorms, and demanding industrial HVAC/R configurations.
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.
Understanding Gorgol's climate constraints and commercial expansion metrics to deploy durable measurement and regulation instruments.
Located along the Senegal River in southern Mauritania, Kaédi presents a unique microclimate characterized by extreme heat indices, fluctuating humidity from agricultural developments, and fine atmospheric dust (Harmattan winds). During peak seasons, temperatures in the Gorgol region frequently scale above 45°C. For refrigeration systems, commercial cold chains, and residential HVAC infrastructures, these extreme temperatures increase the condensation pressure and demand absolute calibration accuracy from manifolds and gauges.
Under such high-ambient working parameters, standard HVAC instruments undergo thermal drift, causing inaccurate refrigerant charge diagnoses. As a leading manufacturer and exporter, Ningbo Taojun Refrigeration designs and supplies dual-gauge manifolds, high-pressure 500 PSI valves, and multi-stage desiccant filter driers that resist scale accumulation, copper pipe oxidation, and mechanical gauge warping.
Kaédi functions as an essential agricultural hub. The development of agricultural cold storage facilities for crops, fruits, and dairy products along the Senegal River valley represents a critical infrastructure push. Food security is directly linked to the uptime of commercial refrigeration systems. If a cold room compressor fails due to refrigerant leakage or moisture accumulation, the cost of agricultural spoilage is immediate.
Ningbo Taojun addresses this challenge by providing robust dry copper filter driers with 3A molecular sieves that guarantee moisture absorption values exceeding 20%. By installing these high-efficiency filters directly upstream of the expansion valve, refrigeration service technicians in Gorgol protect compressors from acid corrosion and freezing blockages, minimizing emergency maintenance cycles and extending operational lifespans by up to 35%.
Our manufacturing parameters are optimized for severe duty cycles. The integration of high-purity copper extrusion, low-shrinkage ITO films for electronic elements, and argon arc welding creates a hermetic seal resistant to thermal shocking. Our laboratory tests subject key valves and manifolds to dynamic temperature cycles scaling between -35°C and 75°C for 500 continuous hours. This verifies that when shipped to Mauritania, the mechanical properties of the structural copper and brass elements remain uncompromised by thermal expandability.
Taojun specializes in refrigeration parts with 38 years of research and production expertise.
Designed with corrosion-resistant, high-pressure copper pipes, optimized to prevent rust and handle severe pressure shocks under high Saharan temperatures.
Optimized for moisture absorption ≥20% and integrated with an activated carbon layer to capture acidic compounds and particulates before they reach the compressor.
Advanced robotized welding techniques ensure 100% leak-proof hermetic seals capable of maintaining internal vacuum parameters even under structural vibrations.
Forging high-reliability OEM/ODM supply lines backed by scientific R&D and strict quality inspections.
Our core manufacturing lines are imported directly from Germany to achieve high structural repeatability and micron-level precision tolerances.
Our research facility is powered by 15 full-time engineers holding doctoral and professorial credentials from the University of Science and Technology of China (USTC).
We provide full structural customization on filter volumes, connector specifications, and dual manifold layouts to fit localized African distribution requirements.
Our ITO raw materials feature zero shrinkage or color drift, and liquid crystal spacers are sourced directly from top-tier Japanese suppliers for high thermal consistency.
Every batch undergoes thermal shock testing ranging from 10°C to 90°C for 30 minutes, 24-hour continuous aging cycles, and high-voltage breakdown evaluations.
Every single manifold assembly, valve, and receiver tank is subjected to automated helium mass spectrometer testing to ensure a leak rate below 1x10-7 mbar.l/s.
1998
Our Factory Building Established
2008
MES intelligent workshop management system
2024
Automation & Global Logistic Integrations
Honesty: Our group always adheres to the principle of being people-oriented, implementing integrity management, emphasizing quality utmost, and securing a premium industry reputation. Honesty has become the source of our group's competitive edge.
Innovation: Innovation is the essence of our group culture. Innovation leads to development, which leads to increased technical strength. Our people make continuous innovations in design concept, operating mechanisms, manufacturing technology, and logistics control.
Responsibility: Responsibility enables long-term perseverance. Our group holds a deep sense of responsibility and mission for our clients, our employees, and the environmental sustainability of refrigeration practices globally.
Cooperation: Cooperation is the foundation of growth. Working together to create a win-win situation is a key benchmark for our corporate expansion. By carrying out integrity-driven cooperation, our group integrates global distribution networks.
How Taojun instrumentation solves field problems in Kaédi's real-world installations.
Local cooperatives in the Gorgol region depend on compact cold storage houses to preserve tomatoes, onions, and rice seeds. These cooling units use R134a and R404A systems. Fluctuations in electrical grids often lead to compressor stalling, causing sudden high-pressure transients. By integrating Taojun's 500 PSI Triple-Sealed Valves and dual-gauge monitoring headers, field mechanics can verify high-side saturation pressure instantly, preventing pressure limits from being breached and safeguarding agricultural assets.
Medical vaccines and pharmaceuticals require uninterrupted thermal control. System contamination by moisture or air during routine maintenance is the leading cause of evaporator icing. Standard HVAC tools struggle to extract moisture down to the required levels due to Gorgol's ambient conditions. Taojun's Single-Stage 5 Pa Rotary Vane Vacuum Pumps provide deep-vacuum draws that vaporize moisture even in high temperatures, ensuring hospital system integrity.
As commercial buildings expand in Kaédi, VRF and inverter-driven multi-split systems are being deployed. These systems operate at high pressures using R410A and R32. Taojun's Universal Charging Safety Valves and Inverter Control PCB Boards offer the technical precision and stability required to maintain reliable operations under Mauritania's grid conditions and heat loads.
Verifiable quality assurance to ensure compatibility with European and American import requirements.
Ningbo Taojun Refrigeration Equipment Co., Ltd. operates a quality control infrastructure certified under GB/T19001-2016/ISO9001:2015 (Registration Number: 41325Q00065R0S). This verification covers our full design, assembly, and testing lines for refrigeration filter driers, copper/aluminum condensers, access valves, and manifold system accessories.
Our supply chains conform to standard environmental compliance benchmarks, including European Union RoHS and REACH directories. This certification guarantees that our components can be integrated directly into home appliances destined for export to strict regulatory jurisdictions.
Main Certification Document
Detailed Scope of Certification
Production Workshop
Product Line
Inspection Lab
Clear answers to engineering challenges faced by HVAC technicians and refrigeration system designers.
Thermal drift is caused by extreme temperature variations expanding the internal Bourdon tube or digital sensor. Our dual-gauge manifolds use premium temperature-compensated copper alloys and heavy-duty rubberized housings. This structural design minimizes sensor expansion, maintaining calibration accuracy even when ambient temperatures reach 45°C in southern Mauritania.
3A molecular sieves selectively adsorb moisture while leaving refrigerant molecules intact. In high-humidity zones or units subject to frequent maintenance like those in the Gorgol region, moisture can react with lubricants to create corrosive acids. Our copper filter driers feature a 20% minimum water absorption capacity, preventing capillary freeze-ups and compressor damage.
Fine sand particles from Harmattan winds can wear down standard O-ring seals. Our triple-sealed system uses a layered barrier packing of graphite-reinforced PTFE. This assembly blocks sand ingress and prevents low-side leaks, ensuring reliable operations under severe outdoor conditions.
Browse our full range of refrigeration components, auxiliary fittings, and manufacturing materials.
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