Precast trench cover mold using engineering polypropylene pp material, this material has good toughness, soluble and plasticity, plastic pellets into a liquid under high temperature, the liquid into a particular mold good iron cement mold cover electricity, the use of liquid circulation to cool the power cover mold, cover mold plastic mold according to the specifications on plastic. This mold manufacture products with high-precision, high consistency, high productivity is any other processing methods can not match. The mold largely determine the quality, efficiency, and new product development capability of the product. There are mostly mold production process are the following six stages. The first is to determine the cover mold solutions, analyze the structure of product parts, dimensional accuracy, how much electricity cover mold, surface quality requirements and molding process. Then there is the mold design, molding parts modeling, structural design. Then is the production preparation of the mold, molded parts where the power to do cover mold material, such as blank processing module. Standard parts and components with the purchase. According to design, preparation of code consisting of processing procedures, as well as cutting tools, tooling, etc. Curb-side drainage molding parts processing, according to the machining process planning, conduct molding, working holes, or using EDM, grinding and other traditional molding technology for processing, and the corresponding heat treatment process. Power cover mold manufacturers _ Li Chen mold (certified) _ Electricity cover mold provided by the city is the county Li Chen plastic mold factory. Mancheng County Lai Chen plastic mold factory (www.baodingchangda.com) Hebei Baoding, plastic building materials leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In Korea the morning mold leadership with the staff warmly welcome all inquiries negotiations to create Lai Chen mold a better future.