... , GRP, car parts, concrete, cement, gypsum board Fiberglass chopped strands, cut from fiberglass roving, there are two types:1. A-grade fiberglass ... chopped strands (FCS) is cut from A-grade roving, for such FCS, has good product ... reinforce.2. B-grade fiberglass chopped strands FCS is cut from B-grade roving. At the beginning roving machine works, fiber diameter is ...