... , FRP plastic, PP BMC; manhole, gypsum board, fiberglass chopped strands for concreteFiber length: 3mm 4.5mm 6m 12mm 18mmFiber: E-glassUsage ... plastic, PP PA BMC2. reinforce concrete, cement, manhole, gypsum board, plaster boardQuality is B grade, raw material is from Owenscorning fiberglass ...