... of cast acrylic sheet by SGS approved 2.Thickness from 2mm-70mm 3.Used for Vacuum forming,thermal ... -retardant sheet, frosted sheet, metal-effect sheet, super resistance to scratch, light guide sheet,sanitary sheet, black-white sheet, blue-white sheet, cloth sheet, super-thick sheet etc ... aluminum alloy; Polish it with the abrasive material for aluminum when it is scratched in abnormal condition.3 ...