... matrix , alkali-free fiberglass as a reinforcing material Fiberglass Grating based on unsaturated polyester resin matrix , alkali-free ... can be used as a structural material , used as a floor with corrosive environments , platforms , ships deck , the House ... , gray , red , blue , black, natural color etc.Glass steel grating with lightweight, high strength , tough , solid , non-slip , corrosion- ...