... . never rusty, non-electrical conductive pultruded fiberglass grids for platform, trench cover, etc Weighing up to 80% less than steel and ... on. Available as: pedestrian walk, bridge plate, industrial floor, platform, trench cover, tray, guard rail, fence, shelf, isolation belt, green corridors ... . Yalong factory plan viewGoods packing: pultruded fiberglass grids for platform, trench cover, etc