1)PS plastic and super smooth film 2)Fireproof,waterproof,wear-resistant; 3)Hard and not easy deformation; Material:Usually the indication is:Polystyrene/polyethylene thin film(PS/PE)Polystyrene/double cooper paper(PS/double copper paper)Thickness:1-12 millimetersKT board color:White, red, yellow, green, gray, blue, blackSpecification:According to customer requestCharacteristics:The good ...