The frp hollow core board is made of continuous fiberglass roving, continuous felt of fiberglass and surface felt. These raw materials are processed by a modeling machine. After dipped, they can be heated into models, bars and tubes of various shapes. fiberglass hollow board 1. anti-corrosion,high strength and durable 2. insulated, low maintain cost, chemical resistant FRP Product features: Fiberglass reinforced plastic composites are strong, lightweight, corrosion resistant, thermally and electrically nonconductive and virtually maintenance free. Whether it is for corrosive environments, structural advantages, fire retardancy or dielectric properties, we have the engineering, experience and credibility to design and manufacture quality FRP products for your application.