... long using life 2.de-corrosion,UV-resist FRP Square Tube, fiberglass tube, frp tubePultrusion is a continuous process for production ... by matrix resin. this following is about our frp square tube's detail information:1. Specification (Length x Width x ... -retardant, UV-resistance, anti-skid, and economy.FRP Square Tube, fiberglass tube, frp tube,fiberglass tube,frp tube,FRP Square Tube FRP Square Tube