Hezhou Zhongshan County Shuangwen Calcium Carbonate New Material Co., Ltd. (hereinafter referred to as "Shuangwen Company") is located in Zhongshan Industrial Park, Hezhou city, covering an area of 221 mu, with a total investment of 570 million yuan. Since its establishment in 2014, the company has been committed to building an open ecological system, strengthening technology research and development, providing products and services for users of well-known brands and large & medium-sized enterprises; its a technological and modern powder enterprise that attaches importance to the construction of resource integration, equipment integration and technology integration. The company owns the most unique calcite mines in Hezhou, with reddish-yellow color phase ore and a total mine reserve of hundreds of millions of tons. The mine is located in the centre of the granite cluster in Zhongshan County. The high quality geographical environment makes Shuangwen's ore not only have the characteristics of calcite with low density and high toughness, but also have the high strength of marble, which makes it not only meet the purpose of filling downstream products but also have the function of reinforcement after being made into products. The company has advanced vertical calcium carbonate processing equipment and self-developed calcium carbonate activation system. In order to ensure the stability of the products, Shuangwen's engineers modify the calcium carbonate production equipment according to the characteristics of each ore, so that the equipment tends to be perfect. The company has formed an annual production capacity of 500,000 tons of heavy calcium carbonate powder, 200,000 tons of calcium carbonate standard sand, and 80,000 tons of active calcium carbonate. In order to make the products meet customers' requirements, Shuangwen Company cooperates with domestic universities and conducts research on different downstream through a lot of experiments to develop different modifications and production methods of calcium carbonate, backed by national intellectual property certification, and with the unique calcite resources, we continuously strengthen the quality of our products to achieve the advantages of lower oil absorption value, better fluidity and stability compared with similar products. Shuangwen Company adheres to the business philosophy of "professionalism, solidity and integrity" and practices the core values of "customer achievement, value-based, integrity and practicality". On the basis of meeting the basic needs of customers, we constantly pursue higher performance and lower comprehensive cost, and achieve mutual benefit and win-win situation while achieving the competitiveness of customers, so as to advance towards the ideal higher level.