Molded fiberglass grating is used as a reinforcing material, resin as matrix, staggered through the woven glass fiber, resin casting mold as a whole is made with excellent corrosion resistance. Princess molded grille gate main square, rectangular princess gate, high-strength porous grille grille and four, these four types of special edge cut and grill can make the stairs after the board. In addition, we also offer a specially designed molded stairs standard film.