Xiuyan Manchu Autonomous County Hengyu Mining Development Co., Ltd. was founded in 1995, is a collection of production processing, comprehensive magnesium products import and export trade as one of the enterprises, the company is located in Xiuyan County of Liaoning Province, west of Yingkou port, the South Dalian Port railway, highway, traffic is very convenient, the geographical position is superior. The business scope includes: fused magnesia, light burned magnesia, burnt magnesia, high purity magnesia, brucite, magnesia alumina spinel and other products.