Anhui Chaodong Cement Co., Ltd. is located on the shore of Chaohu Lake, one of the five largest freshwater lakes in China. It was founded on April 16, 1999 by Anhui Chaohu cement plant, Dongguan cement plant and other four units. Now it has 2446 employees. The company occupies 700000 square meters of land with a total assets of nearly 1.5 billion yuan. On December 8, 2000, "Chaodong stock" was successfully listed on Shanghai Stock Exchange (Stock Code: 600318), raising nearly 400 million yuan. The company is a variety of high-grade cement, chemical building materials, non-metallic mineral deep processing products production and sales as the main business, the main products for 32.5, 42.5 ordinary portland cement, slag Portland cement and PVC door, "Chaodong" brand nano calcium carbonate, heavy calcium carbonate, attapulgite clay, cement and commodity clinker annual production capacity of more than 3 million tons. In terms of cement production technology, the company is the first of the same type of rotary kilns in China to realize microcomputer automatic control, and has invested in the construction of a national environmental protection project, East Asia Cement Co., Ltd., which aims at preventing and controlling water pollution in Chaohu Lake. The project introduces advanced equipment such as main engine from abroad, adopts international advanced technology such as double series suspension preheater and D-D calciner with low heat consumption, forms a cement clinker production line with a daily output of 2000 tons, and prospectively introduces a new concept of "green cement", making full use of calcium carbide slag, limestone tailings, flyash and fly ash in Chaohu City and surrounding areas The industrial waste residue is used as raw material to solve the problem of industrial pollution in Chaohu Lake and its surrounding areas.