Profile: Chem-Pruf Door Co. Ltd. is a supplier of FRP doors, frames and accessories. Our product is used in industrial/ commercial applications such as laboratories and pharmaceutical, food & beverage, chemical, aquariums, pulp & paper, poultry and municipalities. Our doors are manufactured by fiberglass-reinforced polymers and contain fiberglass content of 25-30% by weight. Our gel coat layer is the first line of defense against chemical attack and comes in custom colors.