chop strand fiberglass , B-grade from Owenscorning, 3mm~50mm, FRP plastic, PP BMC; concrete, manhole, plaster board chop strand fiberglass machineFiber length: 3mm 4.5mm 6m 12mm 18mmFiber: E-glassUsage:FRP fiberglass reinforcded plastic, PP PA BMC2. reinforce concrete, cement, manhole, gypsum board, plaster boardQuality is B grade, raw material is from Owenscorning chop strand fiberglass machine