Cover mold particularly rapid development in recent years, not only to expand the production capacity of China's mold industry, but also improve the overall level of China's mold industry. The main reason to make such a big contribution to cover mold is the production of excellent quality, high technological content, which brings advanced production technology and management experience to China's mold industry, mold from China's exports to the world, help to improve World visibility of the mold. In addition, these enterprises in the mold on the outstanding reputation of the national production, if more exports to the industrial revolution abroad, which can be recognized by a high trench cover mold, but also conducive to the export of the mold. No matter what industry is now demand for trench cover mold is a great trench cover mold wholesale, manufacturers have continued to increase, so much the face of this competitive pressure, companies want long-term based on the market, only production of high quality products is the truth. What is it good quality cast it a theft: the? Composite trench cover using polymer chemical composites. Molded from high temperatures, because there is no secondary use value, with good natural anti-theft features. Second, corrosion-resistant, anti-aging: detecting Shanghai composite trench cover trench cover mold manufacturers by the National Chemical Building Materials Test Center, with a significant acid, corrosion resistance, anti-aging indicators have reached more than three wholesale Shandong trench cover mold , longer service life. Third, security: a composite trench cover using a steel frame, even in the face of destructive load, do not crush, with anti-fall features. Carrying capacity and other performance indicators by the State Construction Engineering Quality Supervision and Inspection Center, are in line with the Ministry of Construction CJ / T121-2000 standards.