Composite covers main purposes: mainly used for municipal roads, water, electricity, telecommunications, street, residential areas, landscape planning, oil and gas, chemical production, drain cover, sanitation and other projects. 1, heavy: road motorized vehicles or parking lots. 2, light: prohibition of motor vehicles to enter the green channel, bike lanes or sidewalks. 3, ordinary type: steam 10 and less vehicle traffic roads or parking lots. Composite covers Material Classification: composite materials can be divided into four categories of covers into inorganic and organic composite covers composite covers two kinds. A. metal covers: cast iron, ductile iron, bronze manhole covers, etc; B covers high-strength steel fiber reinforced concrete (cement-based composite materials); C recycled resin covers (recycled resin matrix composites); D polymer matrix composites inspection manhole covers and so on. Wuhan Wuhan Organic composite covers composite covers size, Xinzhou District composite covers, composite covers were Rong Rong was provided by the Wuhan Environmental Protection Technology Co., Ltd. Environmental Science and Technology Co., Ltd. Wuhan DRAGON (www.crkjhb.com) (www.crkjhb.com) strong, credible, environmentally friendly products in Wuhan, Hubei processing industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead DRAGON into the brilliant science and technology and you work for a better future!