... engaged in the manufacture of a wide variety of FRP products.We molded gratings use high strength fiberglass roving ... stair treads, and trench covers for loading frames.Molded FRP gratings use high strength fiberglass roving as reinforcing material, ... include concave top, smooth grating, gritted top, covered with grit, flat or decorative plating, etc.Mold resin system for FRP grating products:1) ...