Nowadays the production of cast iron products contaminated serious in recent years due to the large number of stolen cast iron manhole covers, sewer grates, and loss of vehicle wounding have occurred, to society and people's lives caused great harm. Die working process in the long term effect of cyclic stress often leads to fatigue fracture cover mold, cover mold cement plant technology is mature, the device first. Into the production of cement cover mold good fatigue fracture properties, has a long life, high strength and hardness at operating temperature, has a high resistance to thermal fatigue resistance and corrosion resistance. Plastic cover mold manufacturing mold into a lot of material, such as plastic injection molding, sheet metal steel molding there, but they are far from the same production, are introduced into a mold made of concrete cable trough cover mold, different materials have different characteristics subway cover mold, this production process gradually entered the market high-speed rail cover mold, to solve the duration and cost, while production is relatively simple, no environmental pollution, etc., so that the mold will gradually get market recognition. Li Chen mold (Figure) _ _ Power cover mold cover mold provided by the city is the county Li Chen plastic mold factory. Mancheng County Lai Chen plastic mold factory (www.baodingchangda.com) adhere to the "people-oriented" business philosophy, has a professional staff, and strive to provide the best products and services to contribute to the community, and to welcome new and old customers to visit patrons, sincere cooperation for a better future. Lai Chen mold - your trusted friend, Company Address: Baoding Beierhuan Zhangzhuang industrial area, contact: Liu.