Shandong Useen Calcium Co.,Ltd.was founded in 2021, located in Qingzhou city, close to the S102 provincial highway, convenient transportation and advantageous geographical location. Company covers an area of 600 acres, which has two business departments of calcium oxide and calcium carbonate. With  4 automatic calcium oxide production lines, 9 calcium carbonate production lines, of which calcium carbonate production capacity is 350,000 tons.

In recent years, Yuxin Group has been committed to independent innovation of core technologies in the research and development of calcium carbonate products, and has continuously introduced new technologies and new products. At present, it has established close "industry-university-research" cooperation relationships with well-known foreign industry experts, the Institute of Process Engineering of the Chinese Academy of Sciences, Tsinghua University, China University of Geosciences, Beijing University of Science and Technology, Shandong University, etc., and has carried out all-round and in-depth exchanges and cooperation in talents, equipment, technology, etc., and has strong scientific research and development capabilities. It is a national high-tech enterprise, a national industry leader, and a key listed enterprise cultivated by Qingzhou City. It has won honorary titles such as Shandong Enterprise Technology Research and Development Center and Weifang Nano Calcium Carbonate Key Laboratory．