With the miniaturization of components and improve precision, some tolerance precision mold covers requires less in the 1μm, which requires the development of ultra-precision machining. Development covers the mold with the development of the plastics industry and the development in recent years, People of various equipment and supplies lightweight, aesthetic and feel of the increasingly high demand, which provides a wider market for the mold products mold products to develop, along with the development of the inevitable requirement covers mold mold restrict the development of direct affecting the development of the market, this mold production process is relatively simple, relatively speaking, not high-tech, technology is relatively backward. Technical or older technique passed down, there is no innovation, flexibility and service life of the mold and die there are some differences powers Germany manhole cover mold Manufacturers should strengthen technological innovation, shorten the difference with foreign technology. Die technology research and development of this piece are independent should strengthen cooperation at every factory. The above increase technical cooperation and technology research and development efforts above, resource sharing stage Baoding mold plastic covers, the introduction of advanced technology, this market has become more favorable on the one hand, this mold directly contributing to the rapid economic development. Highways in the city in general, circular, because a circular covers easy to tilt, can better protect the safety of pedestrians and good vehicles. Circular, mainly on account of the circular center of each of the covers through its diameter is the same length, so if the covers are rolled from passing vehicles, because no matter how rolling onwards, its diameter will be more than slightly below the wellhead wide composite resin mold covers, covers not fall wellhead go. And if you use the square as a square diagonal significantly longer than their length of each side, so that the covers are rolled on, it is easy to fall into the well wellhead diagonally, creating a safety hazard. If the plastic covers mold the wellhead made of round or significantly smaller than covers, square covers will not fall into the well. Here involves the maximum use and conservation of a material issue. Wellhead are used depending on the size of the wellhead, If you have to install an area much larger than the top of the square covers wellhead covers mold, then the use of natural materials and practical value of no direct use of circular covers more efficient, which saves material covers , but also to ensure the safety of the wellhead. While in the countryside and cable wells use, the general square, so you can better prevent rainwater into the liquid. National Standards of the covers there are many, monolayer, bilayer, cast iron, ductile iron, composite, cement, magnesite and so on. Covers mold | mold Guohui (certified) | by Baoding covers mold Die Machinery Co., Ltd. Guohui. Baoding Guohui Die Machinery Co., Ltd. (www.bdguohui.com) (www.bdguohui.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, the maximum to meet customer needs. Guohui mold in leadership with the staff warmly welcome all inquiries negotiations to create a better future Guohui mold.