... alkali-free fiberglass as a reinforcing material Fiberglass Grating based on unsaturated polyester resin matrix , alkali ... , ships deck , the House of plank and other . Lightweight, high strength , corrosion-resistant flame retardant , non-magnetic ... gray , red , blue , black, natural color etc.Glass steel grating with lightweight, high strength , tough , solid , non-slip , corrosion-resistant ...