composites polymer resin manhole cover

Resin manhole covers have the following characteristics
1.The resin drain is produced by high temperature mold compression ,It has the excellent characteristics of anti-freezing, sunscreen, corrosion, acid and alkali resistance,  Compared with concrete drainage ditch light weight, stronger environmental stability and longer service life   It is now a widely used product in engineering.  2  Resin Manhole Cover has light weight, high strength, excellent fatigue resistance, damage safety, simple molding, low noise, and good chemical resistance and Beautiful appearance and other advantages . We are a big factory production strength welcome your purchase