... (2) Corrosion-resistant (3) Non-conductive, not thermal conductivity. FRP Bolt is the use of glass fiber, enhanced resin pultrusion winding ... tray, nuts and other components of the composition of the bolt. Mainly used in coal mines, Half Coal Lane, coal wall ... mine longwall face coal roadway and semi-coal rock Roadway Bolt, mining bolt, and anchoring agent supporting the use of anchor