AR Fiberglass C-Class Chop Strand B-grade from Owenscorning, 3mm~50mm FRP plastic; concrete, manhole, gypsum board AR Fiberglass C-Class Chop ... : E-glassUsage:FRP fiberglass reinforcded plastic, PP PA BMC2. reinforce concrete, cement, manhole, gypsum board, plaster boardQuality is B grade, raw ...