Covers composite covers, for covering the road or at home deep, to prevent people or objects falling. [1] Kuni Tongzhou Metal Casting Material can be divided into covers, high-strength fiber cement concrete covers, resin covers and so on. Generally circular. Can be used in the green belt, sidewalks, motorized vehicles, docks, alleys and so on. In China Wuhan Organic composite covers, and covers most of the surface fit is not tight, the pressure outdated vehicle tires and covers collision, covers therefore become one of the city's noise sources. Composite covers constantly improving and updating, there is a manhole cover, called Dr Peng "brand silicon plastic composite covers," covers the indicators that have exceeded the Ministry of Construction industry standards, basically reached the national standard. It is the most prominent advantage is not using steel skeleton reinforced composite covers the production of Wuhan, and composite reinforced with glass fiber, are GRC products. Therefore Wuhan composite covers equipment, which in the case of continuously rising prices of steel, more benefits will not be affected. Because it does not contain iron, which is more security than Shisu and fiber reinforced concrete covers. Wuhan Organic composite covers, was wing technology (certified), composite covers from Wuhan Hongshan DRAGON environmental technology Limited. Environmental Science and Technology Co., Ltd. Wuhan DRAGON (www.crkjhb.com) (www.crkjhb.com) is Wuhan, a leader in environmental protection products processing, over the years, the company implement the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum to meet customer needs. In the present-technology leadership with the staff warmly welcome all inquiries negotiations to create form-technology better future.