Explore our core certified refrigeration, cooling, and installation accessories engineered to match global standards.
Understanding the critical role of specialized pipeline protective materials in global HVAC/R architectures.
In modern HVAC/R engineering, structural integrity extends far beyond compressors and thermal copper lines. The systemic protection of external air-conditioning conduits—frequently exposed to aggressive chemical, atmospheric, UV, and thermodynamic stressors—stands as a primary indicator of system life and overall thermal efficiency. Air Conditioner (AC) hose tapes, also widely known as PVC wrapping tapes or non-adhesive pipe insulation wraps, form the crucial external skin protecting the elastomeric insulation sleeve and inner copper tubing from structural deterioration.
Globally, the market demand for specialized AC hose wrapping solutions has evolved toward zero-halogen, high-tensile, low-flammability PVC and PE matrices. As urban density increases, commercial architectural projects call for protective wraps that prevent thermal dissipation, prevent condensation drip, and shield pipes from the elements. Over 80% of globally deployed high-durability wrapping material is engineered and exported from highly consolidated specialized plants in Zhejiang and Ningbo regions of China, which integrate petrochemical processing directly with advanced extrusion manufacturing lines.
Located in Xiangshan, Ningbo, a beautiful tourist city, **Ningbo Taojun Refrigeration Equipment Co., Ltd.** was established in 1988. The company's predecessor was the esteemed Xiangshan Refrigeration Accessories Factory of Zhejiang University. Over more than 35 years of rapid development, we have evolved into a national high-tech enterprise integrating design, advanced R&D, heavy-duty production, sales, and complex refrigeration service networks.
We specialized in refrigeration parts for 38 years. Our main portfolio consists of filter driers, check valves, access valves, condensers, brass and copper accessories, as well as high-tensile HVAC tape ties. In 2021, Taojun gained the prestigious **National High-Tech Enterprise** credential due to our technological innovations, equipment optimization, and modern supply chain integrations.
With an unwavering pursuit of client satisfaction, we have successfully developed our domestic brand "Lingshan" filters. We have consistently passed the **ISO9001:2008 / GB/T 19001-2016** quality systems, EU RoHS environmental certification, and US UL standards to ensure reliable global cooperation.
Discover the physical characteristics that distinguish first-class PVC pipe wrapping tape from generic alternatives.
Generic wrapping tapes degrade under extreme sun exposure, becoming brittle within months. Premium-grade PVC AC tape is manufactured with high-purity polyvinyl chloride film blended with plasticizers, thermal stabilizers, and specialized carbon-black UV blockers. Our raw materials are carefully formulated to ensure the wrap stretches up to 180% without tearing, allowing a tight vapor seal around copper lines.
| Technical Parameter | Standard Specification | OEM/ODM Customization Range |
|---|---|---|
| Material Composition | High-density Plasticized Polyvinyl Chloride (PVC) | Flame retardant and non-toxic grades (REACH / RoHS) |
| Tensile Strength | ≥ 25 N / 10mm | Up to 35 N / 10mm for industrial applications |
| Elongation at Break | ≥ 180% | Customizable up to 250% for high-stretch curves |
| UV Radiation Resistance | ASTMG154 Standard (500 Hours Exposure) | Accelerated weathering formulas for desert regions |
| Operating Temperature | -20°C to +80°C | Extended formula for industrial pipelines (-40°C to +105°C) |
| Self-Adhesion & Tack | Non-adhesive (Tension wrap) or Low-tack Pressure-Sensitive | Pure PVC dry wrap vs. acrylic-coated backing options |
Combining academic research with advanced manufacturing equipment imported from Germany and Japan.
Our core precision manufacturing machinery is imported directly from Germany to secure extreme dimensional tolerances.
We boast 15 engineers in our R&D center, including doctors and professors collaborating with the University of Science and Technology of China.
Tailored width, thickness, color configurations, and custom private labeling are supported with a competitive 500-unit MOQ.
Raw materials, including ITO film and liquid crystal spacers, are sourced from Japan. 100V high voltage test ensures zero electrical breakdown.
Trusted supplier to top-tier home appliance enterprises, including Midea, Gree, Haier, Whirlpool, Electrolux, and Huarui.
High & low temperature tests (+75°C to -35°C for 500 hrs), thermal shock (10°C to 90°C), and damp heat aging tests.
A core element of our refrigeration line is the copper filter drier, which integrates seamlessly with your AC piping systems. Our filter driers are designed to absorb moisture and acid, and to filter out dangerous particulate impurities before they cause compressor failure.
From an academic research factory to a global industry leader in HVAC/R components.
1998
Expansion of the primary manufacturing facility and production lines for national refrigeration markets.
2008
Deployment of the MES intelligent workshop management system, transitioning to digitized factory controls.
2024
Global supply networks serving 50+ countries with custom OEM/ODM packaging, automation, and intelligent component testing.
Honesty: We adhere to the principle of integrity management, people-oriented growth, and a strict commitment to product quality, which forms our true competitive edge.
Innovation: Innovation is the essence of our group. By developing new mechanisms, technology, and advanced management concepts, we stay prepared for changing macro climates.
Responsibility: We bear a strong sense of mission to our clients and global partners. This unseen driving force shapes our engineering choices and sustainability goals.
Cooperation: Working together to create a win-win outcome. By integrating resources and capitalizing on professional specialties, we deliver premium performance to our customers.
Protecting critical cooling lines under severe environmental and structural operating conditions.
Verifiable manufacturing compliance for filter driers, condensers, access valves, and HVAC hose accessories.
Main Certification Document
Detailed Scope of Certification
Quality Registration Certificate
Our official registration (Registration No.: **41325Q00065R0S**) confirms compliance with China's CNCA system. For global partners demanding complete quality traceability, Ningbo Taojun ensures systematic checks from chemical raw compound verification to thermal cycles and pressure tests.
Ensuring timely design validation, strict quality inspections, and global shipping options.
1. Pre-sales Consulting & Technical Support: Over 15 years of technical expertise in pump and refrigeration systems. Dedicated one-on-one engineering consultation to validate designs. A 24-hour service hotline guarantees responses within 8 hours.
2. After-sales & System Improvements: Our team offers technical instruction, installation guidelines, and system trouble-shooting. One-year comprehensive warranty is standard, and we provide lifelong technical assistance for all Taojun components.
Technical answers to support HVAC engineers, procurement managers, and commercial distributors.
Complete your supply chain with our brackets, insulated tubing, and brazing options.
Taojun