road frp manhole cover Material:fiberglass; Corrosion-resistant,flame-retardant; Sturdy and Non-slip;

road frp manhole coverMaterial:fiberglass(grp bmc smc)Corrosion-resistant,flame-retardant;Sturdy and Non-slip;

shape:rough and square: Our covers the surface of the water produced from natural stone and unsaturated polyester resin composition can be achieved non-slip effect

color:any colors.