Cotton is a natural fiber derived from cotton plants which dates back to the 5th millennium B.C. Without any bleach or chemical processing, cotton is one of the best gifts the nature offers to human beings.
E glass spray up roving (gun roving E321) is coated with a silane based sizing, it is mainly compatible with unsaturated Polyester, Vinyl ester resin, Polyurethane resin and so on. It is mostly used to produce FRP boat hulls, safe board, sanitary apparatu