1. FRP stair tread 2. Strong, light, UV-resistance, Corrosion-resistance, insulation, fire-resistance. 1. FRP GRP stair tread2.Can be used on stairs, trench covers, walkways, platforms.3.Can be used in chemacals, ocean works, sewage treatments, and so on.4. Corrosion-resistance, UV-resistance, fire-resistance, insulation. FRP stair tread