Engineered for robust mechanical installations and heavy-duty thermodynamic cycles across industrial projects in Manila, Cebu, and Davao.
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.
The Philippines presents a unique refrigeration landscape characterized by tropical humidity, high average temperatures, and corrosive coastal salty air. In recent years, driven by the Department of Agriculture's initiative to cut food waste and post-harvest losses, cold chain logistics have seen rapid expansion. Under the Philippine Cold Chain Industry Roadmap, the government aims to significantly expand agricultural and pharmaceutical cold storage space, notably across key economic zones in Luzon, Visayas, and Mindanao.
For refrigeration OEMs, processing plants, and commercial developers in cities like Manila, Cebu, and Davao, selecting the correct thermal expansion control hardware is critical. Copper capillary tubes act as the primary, highly reliable metering devices in small-capacity refrigeration cycles, split air conditioning systems, and cold lockers. The ability of capillary tubes to resist corrosive marine salt sprays and maintain absolute inner diameter (ID) dimensional accuracy determines the long-term energy efficiency ratio (EER) of refrigeration setups in these tropical operations.
Globally, the HVAC/R sector is undergoing a massive shift under the Montreal Protocol Kigali Amendment. Manufacturers are phasing out traditional HCFCs (such as R22) in favor of low-GWP (Global Warming Potential) options like HFCs (R410A, R134a) and natural hydrocarbons (R290, R600a). The Philippines, governed by the Environmental Management Bureau's Philippine Ozone Desk (EMB-POD), is aggressively enacting regulatory phases to control chemical imports.
This chemical transition puts unique thermal pressure demands on fluid transfer components. R290 (propane) and R32 systems operate at higher working pressures and require highly precise mass flow calculations. Because a capillary tube controls liquid refrigerant flow solely via friction-driven pressure drop across a narrow channel, even a micrometer-level deviation in internal capillary diameter can lead to sub-optimal compressor heat ratios, system icing, or critical compressor failure.
To ensure uninterrupted operation in tropical climates, we utilize high-purity C12200 Phosphorus-Deoxidized Copper (minimum 99.9% Cu content). This grade provides the highest thermal conductivity combined with excellent brazing capacity and corrosion resistance.
| Parameter Details | Technical Range & Standards | Relevance to Philippine HVAC Installers |
|---|---|---|
| Material Grade | ASTM B280 / EN 12735-1 (Phosphorus-Deoxidized C12200) | Resists pitting corrosion caused by high salinity and humidity. |
| Outer Diameter (OD) Range | 1.6 mm to 4.0 mm (Customizable tolerances ±0.02 mm) | Accurate flow matching to prevent backpressure peaks. |
| Internal Diameter (ID) Range | 0.5 mm to 2.5 mm (Tolerance <0.015 mm) | Maintains precise throttling dynamics under tropical loads. |
| Operating Pressure Rating | Optimized for high-pressure R32 and R290 applications (>500 PSI) | Prevents system ruptures during extreme ambient heat spikes. |
| Inner Bore Cleanliness | Residue limit <0.038 g/m² (ASTM B280 compliant) | Prevents capillary clogging from oil sludge or carbon scale. |
Navigating trade processes with the Bureau of Product Standards (BPS) under the Department of Trade and Industry (DTI) requires components to carry verified safety and quality certificates. Ningbo Taojun simplifies this route for importers. With our ISO 9001:2015, US UL, and European RoHS credentials, customs clearance bottlenecks are minimized.
Furthermore, we employ anti-humidity ocean-worthy packaging. Exported copper products are chemically passive-coated, vacuum-sealed with desiccant pouches, and secured inside reinforced wooden crates. This ensures that capillary copper coils arrive at Manila or Cebu dry ports completely free from tarnishing or humidity-induced green oxidation (verdigris).
A capillary tube is highly vulnerable to microscopic particles and trace moisture. Free moisture in a refrigeration cycle will freeze at the capillary outlet, causing total system blockage. Additionally, moisture combined with synthetic oils creates corrosive acids that eat away at compressor motor windings.
Ningbo Taojun's integrated system solution links our custom capillary tubes directly with our signature high-purity copper filter driers. Using a dual-core absorption layer (3A Molecular Sieve + Active Carbon) enclosed within high-purity copper shell casings, we guarantee moisture absorption levels >20%. System components are seamlessly welded using advanced automatic argon-arc machines to prevent micro-leakage at critical joint transitions.
Why premier global home appliance brands rely on Ningbo Taojun refrigeration accessories.
Over 35 years of engineering innovation collaborating with specialized mechanical research divisions at Zhejiang University.
Verified through ISO 9001 and IATF 16949 production standards. Our internal 5D Quality System ensures a defect rate of under 0.05%.
Active component supplier networks in over 50 countries, partnering directly with Haier, Midea, Gree, and Whirlpool.
Comprehensive OEM/ODM specifications. We welcome bespoke designs with competitive MOQ structures and global logistics support.
All parts adhere to EU RoHS, REACH, and WEEE standards. We pack using 100% recyclable heavy-grade corrugated materials.
Equipped with computerized MES workshop logistics, automated CCD structural vision inspection, and high-sensitivity helium leak tests.
Maintaining a 98.6% customer satisfaction index. Responsive after-sales support with a 24-hour claim response policy.
Engineered tolerance bounds within ±0.02 mm across copper tubing parameters to ensure standard mass-flow design.
Driving innovations in smart products and green manufacturing lines to support global carbon reduction targets.
Ningbo Taojun's manufacturing processes undergo continuous external audits. Our registrations are transparently verifiable.
GB/T19001-2016 / ISO9001:2015 Quality Management System Certification
Officially Audited Scope: Production and Design of Core Refrigeration Components
Our ISO certification (Registration No.: 41325Q00065R0S) can be cross-verified directly on the official Chinese CNCA database (www.cnca.gov.cn) or via the Registrar portal (www.zcgirz.com).
Continuous operational investments in MES, automated assembly lines, and testing equipment.
Our standardized selection of high-pressure couplers, split service valves, capillary lines, and filter accessories.
Technical clarifications on copper capillary tube design, selection, and tropical deployment.
C12200 copper has a minimum copper content of 99.9% and is deoxidized with phosphorus. This specific chemical structure significantly limits thermal fatigue and hydrogen embrittlement. In highly humid and coastal areas across the Philippines, C12200 provides superior resistance against atmospheric corrosion and marine micro-organisms, preventing pinhole leaks at joint interfaces.
Our sizing drawing dies are imported from Germany and are monitored continuously via laser micrology feedback loops. This allows us to guarantee internal diameter (ID) tolerances to within ±0.015 mm. Precision tolerances prevent erratic mass-flow variations and maintain thermodynamic cycle efficiency in warm tropical climates.
Yes. All our capillary tubes undergo structural validation and are tested up to 500 PSI. This pressure rating satisfies the structural safety requirements for both R32 (commonly used in residential AC systems) and R290 (propane-based commercial refrigeration systems).
Orders departing from our facility near Ningbo Port typically arrive at Manila South Harbor or Cebu Port within 10 to 14 days of ocean transit. We offer expedited shipping options and complete customs documentation to ensure smooth import clearance through the Bureau of Customs (BOC).
Taojun
