1)fiberglass reinforced plastic board 2)frp grating with 3mm covered surface ... :fiberglass reinforced plastic board is FRP grating with covered surface.The sheet can be used as walkway,floor, ... drain cover,platform.It often be used in environment with Acid and alkali corrosion ... PRODUCTS:A, CORROSION RESISTANT:B, FIRE RETARDANT:C, HIGH STRENGTH:D, NON-MAGNETIC:E, NON-CONDUCTIVE:F, ...