Fiberglass truck tonneau cover:Made by FRP (Fiber Reinforced Plastics),highly corrosion resistant,better thermostable,ametaboly berglass truck tonneau cover: .Made by Fiberglass,FRP (Fiber Reinforced Plastics),highly corrosion resistant,better thermostable,ametaboly.2.Use our own patent technology of honeycomb panel enhancing,make sure the cover is ametabolic with 300KG load:3.Low self-weight, ...