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Fiberglass Gfrp FRP Round Tube Hollow Tubes Circular Pipe for Guardrail Handrail, Find Details and Price about FRP Round Tube Pultruded Polyurethane Composites from Fiberglass Gfrp FRP Round Tube Hollow Tubes Circular Pipe for Guardrail Handrail - Qinhuangdao Shengze New Material Technology Co., Ltd.