... :no limited Thickness from 3.8mm to 16mm variety of Polycarbonate sheet:Features of pc sheetLight Transmisson, Fire Retardancy, Impactresistance, UA-Protection ... poisonous gas.3, Impactresistance, because the impact strength of pc sheet is 250-300 times of the ordinary glass.4, UV ... directly, it is convenient for construction and processing. variety of polycarbonate sheet