A variety of color well cover placed in the city or on the road, it can certainly play a very good beautification effect, composite well cover is composed of a variety of polymer materials, its cost is relatively low, compared with cast iron manhole cover, composite manhole cover meets the needs of environmental protection, reduce mining. It can reduce a lot of unnecessary waste for the company and protect our ecological environment to a certain extent. Continue to engage in technical innovation, improve the production process, improve the technical level.