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| Categories | PC Resin | 
|---|---|
| Light transmittance: | 89%~91% | 
| Impact Vicat softening point: | 148°C | 
| Transmittance of the 1mm tablet: | 84.4% 72.3% 64.0% 62.0% 58.5% 52.7% | 
| HS Code: | 39074000 | 
| Molecular Principal Chain: | Carbon Chain Polymer | 
| Flammability Rating: | V-2 V-0 | 
| Origin: | China | 
| Molding Method: | Injection Molding | 
| Place of Origin: | China | 
| Brand Name: | HMT | 
| Certification: | ISO 9001, ISO 14001, RoHS/REACH | 
| Price: | Negotiable | 
| Packaging Details: | Export Film Packing / According To Customer | 
| Delivery Time: | 7-15 working days | 
| Payment Terms: | L/C,D/A,D/P,T/T,Western Union,MoneyGram | 
| Company Info. | 
| Xiamen HMT International Trade Co., Ltd | 
| Verified Supplier | 
| View Contact Details | 
| Product List | 
High-Performance Moisture-Proof Light Diffusing Polycarbonate for Wet Environment Luminaires
Light Diffusion PC product models in the LED lighting field
Physical property  | Standard  | Value  | Unit  | 
Density 23ºC  | ASTM D792  | 1.19  | g/cm3  | 
Shrinkage 23°C  | ASTM D955  | 0.5~0.7  | %  | 
Melt Index 260°C 2.16kg  | ASTM D1238  | 19  | g/10min  | 
Mechanical behavior  | Standard  | Value  | Unit  | 
Tensile Strength 50mm/min  | ASTM D638  | 60  | MPa  | 
Elongation Break 50mm/min  | ASTM D638  | 50  | %  | 
Flexural Strength 2.0mm/min  | ASTM D790  | 90  | MPa  | 
Flexural Modulus 2.0mm/min  | ASTM D790  | 2600  | MPa  | 
lzod Notch lmpact 23ºC 3.2mm  | ASTM D256  | 51.02  | kJ/m2  | 
lzod Notch lmpact -10ºC 3.2mm  | ASTM D256  | 37.75  | kJ/m2  | 
Thermal  | Standard  | Value  | Unit  | 
HDT 0.45MPa 6.4mm  | ASTM D648  | 95  | ºC  | 
HDT1.8MPa 6.4mm  | ASTM D648  | 84  | ºC  | 
Production Description:
Advanced PC formulations address virgin material limitations through molecular reinforcement and nano-additives. Post-modification, the material achieves UL94 V-0 flammability ratings without sacrificing 150°C HDT, while resolving environmental stress cracking in fuel/ethanol exposures. Ideal for EV battery housings and surgical instrument handles requiring chemical/thermal duality.
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.
                                 
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