chopped fiberglass for gypsum board is cut from B grade roving, mainly used for gypsum board Fiberglass chopped strands, cut from fiberglass roving, there are two ... roving machine works, fiber diameter is not very regular; during production, some roving rolls is disordered, such roving is regarded as ... , Uzbekistan, Russia, Korea, Taiwan China, Egypt, Angola, etc. chopped fiberglass for gypsum board