... 1)Waterproof 2)wearing resistance 3)flame retarding 4)smoothness pvc transparentpanelsFetures:wearing resistance,waterproof,flame retarding,aging resistance,smoothness,flatness ... :5.5mm,6.0mm,7.5mm,8.5mm,9.0mm5)PVC%:40%,45%,50%6)Surface: common glossy, high glossy, matt ... be supply by customers and made by us. heat resistant roofing sheets