Kingflex Insulation Co., Ltd. is a leading professional manufacturing and trading combo specializing in high-performance thermal insulation solutions. Headquartered in Dacheng, China—the recognized capital of green building materials—our operations focus on energy-saving, environmentally responsible systems. We combine R&D, advanced manufacturing, and global sales to deliver bespoke solutions for commercial and industrial insulation requirements.
At Kingflex, energy conservation and energy efficiency are central to our design philosophy. We support global clients through detailed consults, material engineering, project installation guidance, and dedicated post-sales support. Originally established under the Jinwei Group, which carries over 40 years of market presence since its founding in 1979, Kingflex represents the first manufacturer of thermal insulation materials north of the Yangtze River, building a legacy of technical excellence.
Modern thermal insulation is governed by chemistry and microstructure. The basic NBR/PVC elastomeric matrix depends on precise chemical ratios to achieve low thermal conductivity, high moisture vapor diffusion resistance, and excellent fire performance. Our engineering team utilizes advanced compound formulations to control cellular nucleation during the extrusion process.
We maintain a closed-cell rate of over 98%. This tiny, independent cell structure prevents moisture penetration, ensuring the thermal conductivity (K-value) remains stable even in high-humidity applications.
Our formula incorporates non-halogenated/low-halogen flame retardants, carbon-forming catalysts, and smoke suppressants, meeting strict international standards like BS 476 and UL 94.
By balancing blowing agent dynamics, we produce an elastomeric foam with a density between 40–55 kg/m³, offering structural integrity combined with flexibility.
The industry is transitioning toward bio-based elastomers and zero-ODP (Ozone Depletion Potential) / low-GWP (Global Warming Potential) blowing agents. Our R&D division is evaluating bio-sourced polymer matrixes and aerogel-composite integration to reduce thermal conductivity below 0.030 W/(m·K) at 0°C. These developments will help industrial plants achieve lower greenhouse gas emissions while maintaining process control.
From commercial HVAC infrastructure to cryogenic LNG applications, different systems require specific insulation designs to prevent condensation, control heat loss, and manage acoustic transmission.
Preventing moisture condensation is critical in chilled water lines and air ducts. Our closed-cell rubber foam prevents surface sweating and protects indoor air quality by preventing mold development.
Liquefied gas systems require multi-layered, low-temperature synthetic rubber sheet solutions. Our specialized formulas maintain flexibility at cryogenic temperatures, preventing stress cracking.
High-temperature lines need durable, thermal-resistant materials. By pairing NBR/PVC systems with high-density rock wool insulation blankets, we provide hybrid systems designed for thermal performance and structural durability.
Our manufacturing complex is built on advanced production scale and automation. Located in Dacheng, China, Kingflex operates 5 large automatic assembly lines, generating an annual production capacity exceeding 600,000 cubic meters.
Our status as a designated supplier for the Ministry of Energy, the Ministry of Electric Power, and the Ministry of Chemical Industry reflects our manufacturing standards. By sourcing raw materials locally and utilizing automated processing, we minimize supply chain interruptions and maintain consistent product quality for international markets.
Production Experts
R&D Engineers
Export Countries
Deploying insulation materials worldwide requires compliance with local building codes, fire regulations, and chemical safety standards. Kingflex maintains a strict quality assurance system to support project requirements across regions.
Our formulations undergo regular verification to comply with international requirements, including:
Our products are manufactured according to standard configurations for ease of installation. We also provide customized dimension options through our OEM service.
| Property | Value |
|---|---|
| Material | NBR/PVC blend |
| Thickness | 6mm – 50mm |
| Density | 40 – 55 kg/m³ |
| Service Temperature | -40℃ to 105℃ |
| Closed Cell Rate | > 98% |
| Compression Resilience | > 80% |
| Property | Value |
|---|---|
| Material | NBR/PVC blend |
| Thickness | 9mm – 40mm |
| Inside Diameter (ID) | 6mm – 114mm |
| Density | 40 – 55 kg/m³ |
| Service Temperature | -40℃ to 105℃ |
| Primary Advantage | Even coating, reduced condensation |
We supply a full set of energy-saving insulation systems, serving as an integrated solution provider for thermal insulation, cold insulation, and noise reduction.
Our materials are utilized globally across HVAC installations, cleanroom facilities, and large-scale industrial complexes. The following case screenshots demonstrate our ongoing partnerships and quality consistency with global clients.
We control cell expansion during manufacturing to produce consistent cell sizing. This helps reduce installation time and maintain physical properties under mechanical load.
Our product selection meets diverse insulation needs, from flexible pipes to cryogenic sheets and mineral fiber panels.
Review answers to common questions about our products, production capacities, and international standards.
Kingflex