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                  | Place of Origin: | China | 
| Brand Name: | HMT | 
| Certification: | ISO 9001, ISO 14001, RoHS/REACH | 
Environmentally Stable Polycarbonate for LED Lighting in High-Moisture Settings
Light Diffusion PC product models in the LED lighting field
| Properties | Method | Unit | A1105 | 
| Physical | |||
| Density | ASTM D792 | g/cm3 | 1.2 | 
| Molding Shrinkage | ASTM D955 | % | 0.5 ~ 0.7 | 
| Melt Flow Index, 300ºC/1.2kg | ASTM D1238 | g/10min | 9.5 | 
| Water Absorption, 23ºC, 24h | ASTM D570 | % | 0.2 | 
| Mechanical | |||
| Stress at Break, 50mm/min | ASTM D638 | MPa | 72 | 
| Yield Stress, 50mm/min | ASTM D638 | MPa | 65 | 
| Yield Strain, 50mm/min | ASTM D638 | % | 6 | 
| Tensile Modulus , 1mm/min | ASTM D638 | MPa | 2,300 | 
| Strain at Break, 50mm/min | ASTM D638 | % | 120 | 
| Flexural Strength , 2mm/min | ASTM D790 | MPa | 97 | 
| Flexural Modulus, 2mm/min | ASTM D790 | MPa | 2,300 | 
| IZOD Impact Strength , 23ºC, Notched | ASTM D256 | J/m | 800 | 
| Thermal | |||
| Heat Distortion Temperature, 3.2mm, Unannealed, 1.82MPa | ASTM D648 | ºC | 130 | 
| Vicat Softening Temperature, 50N, 120ºC/h | ASTM D1525 | ºC | 150 | 
Production Description:
Chemical-resistant PC grades incorporate fluoropolymer layers (ETFE/THV) via coextrusion, achieving 24hr NSS resistance (ASTM B117) and 500hr fuel C immersion stability. Automotive fuel system components and industrial chemical valves benefit from this multilayer barrier technology.
Tailored Performance: Balances transparency, strength, and processability for niche uses.
Cost Reduction: Blends like PC/ABS lower material costs while maintaining core properties.
Durability: Enhanced UV, chemical, and thermal stability for harsh environments.
Regulatory Compliance: Meets flame safety (UL94), food contact (FDA), and medical standards.
A: Bulb Lamp Cover Series (Light Transmittance 90% - 98%, Beam Angle 150° - 230°)

B: T-Bulb Lamp Cover Series (Light Transmittance 86% - 96%, Beam Angle 150° - 200°)

C. BR Lamp/PAR Lamp/Spotlight Cover Series (Light Transmittance 88% - 94%)

D. Taper/Candle Bulb Cover Series (Light Transmittance 85% - 95%) 

E. Ceiling Lights and Various Lamps Series (Light Transmittance 80% - 92%)

F. Tube Light Series (T8 Tubes, Dual-Color Tubes) (Light Transmittance 80% - 96%)                                           

Company Profile

 



HMT International is a leading global manufacturer and exporter specializing in modified plastics, operating under the brand Chongyuan. Established with a commitment to innovation and sustainability, we engineer high-performance thermoplastic compounds tailored to meet the evolving demands of industries worldwide. 
Certified to ISO 9001, ISO 14001, and compliant with RoHS/REACH standards, we align our operations with global sustainability goals while delivering exceptional technical support and supply chain reliability. 
3,000+ customized formulations.
500,000+ MT annual production capacity.
25+ years of polymer expertise.
ISO 9001 & ISO 14001 certified facilities.