FRP/GRP/Fiberglass Solid Rods: used for plant holders/vine stake (tapered), flagpoles, curtain poles, umbrella rib, etc. FRP/GRP/Fiberglass Solid Rods FRP rods are of long service life, light weight, high strength, pliant, attractive, insulating, anti-corrosion, widely used for benchmarking, agricultural greenhouse frames and supports, goal frame, kite framework, plant holders/vine stakes ( ...