AR Fiberglass Chop Strand B-grade from Owenscorning, 3mm~50mm FRP plastic; concrete, manhole, gypsum board AR Fiberglass Chop StrandFiber length: 3mm 4.5mm 6m 12mm 18mmFiber: E-glassUsage:1. FRP fiberglass reinforcded plastic, PP PA BMC2. reinforce concrete, cement mortar premix, manhole, gypsum board, plaster boardQuality is B grade, raw material is from Owenscorning AR Fiberglass Chop Strand