Limited company in Tianjin is a non-metallic mineral trading company invested by Xinjiang's mineral processing plant. Alatai mineral processing plant, founded in 2003, integrates the mineral exploiting, producing, processing and sales together and specializes in mineral-developing and processing. The factory covers 180, 000 square meters with rooms of producing and processing, and it is equipped with specialized equipment of producing, processing and testing. Guangxian product processing company, which is located in Alatai area which is rich in minerals, takes good advantage of local geographical preference and introduces specialized producing equipment. The strict system of quality control and management is set up in the company and some experts are employed. Guangxian Production Company is one of the largest tourmaline production enterprises in China.