... environment, explosion, cracking, shape changing. 4. Weather-resistance: it can stand the temperature between -30°C to +70°C , non-deformation ... , aging-resistant. 5. Fire retardant: WPC can automatically extinguish by itself and meet the standard of GB ... and glued. Suitable for thermoforming. 7. Borer proof: WPC can get rid of insect.8. Perfect chemical resistance, good resistance ...