Binzhou Shuangfeng Graphite Sealing Material Co., Ltd. (formerly Shandong Binzhou Flexible Graphite Sealing Parts Factory), a provincial-level high-tech enterprise, was founded in 1972. The company is located in Binzhou, an emerging city on the Yellow River Delta. The total area is 63,500 square meters. The company has extensively introduced and absorbed advanced technology and equipment at home and abroad, and has taken the lead in the national graphite sealing industry in terms of production capacity, technical level, product quality, and new product development, promotion, and use. It is the earliest graphite that has obtained ISO9001 quality management system certification in China. Sealing Material Company is also one of the largest flexible graphite coil (sheet) production bases in Asia, with an annual production capacity of 1,200 tons. The company's registered trademark "Shuangfeng Brand". The main products are: flexible graphite coils, sheets, graphite strips, graphite wires, graphite braided packing, graphite packing rings, spiral wound gaskets, coated gaskets, graphite metal composite plates, graphite reinforced gaskets, cylinder gaskets, etc. . It is widely used in petroleum, chemical, electric power, automobile and other fields, including China Petrochemical Corporation, China National Petroleum Corporation, China Huaneng Group, China Datang Corporation, China Huadian Corporation, China Guodian Corporation, China Power Investment Supported by large enterprises such as Group Corporation, FAW Group and Dongfeng Motor Group, the products enjoy a high reputation in the domestic market and are exported to the United States, Europe, Japan, South Korea, Southeast Asia and other countries and regions.