Plastic cover mold is widely used in daily life, mold products in the choice of material of which the proportion of injection molding technology accounted for a large plastic mold, due to precise size, available with inserts, high productivity, easy to implement modernization, etc. are widely used . Selection of the mold, for the project could receive good benefits has a very important role. The outer mold should have sufficient hardness and wear resistance, hardness of plastic generally 50-60HRC following curb-plastic mold, heat-treated outer mold should have sufficient hardness covers plastic mold, to ensure that the mold has sufficient rigidity, improved mold hardness help improve the wear resistance. Trench cover mold boxes commonly used polypropylene as raw material, the material has good malleability, round plastic machining, hardened and can grind the other mold | plastic mold | mold from the city is the county Li Chen Li Chen plastic mold factory provided. Mancheng County Li Chen plastic mold factory (www.baodingchangda.com) strong, credible, in Baoding plastic building materials industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Korea into the morning glory die and you work for a better future!