Dashiqiao City Tongze Minerals Co., Ltd.is a Sino-foreign joint venture and a comprehensive economic entity focusing on production,processing and marketing of various refractory materials.Tongze's products including light burned magnesia,reburned magnesia,electrosmelted magnesia and their finished products have been exported to more than 20 countries and regions including Europe,the U.S and Southeast Asia.

Tongze is located in Dashiqiao, which is named as "Magnesium City of China" and a town of importance in southern area of Liaoning province. Tongze is 7 km away from Shenyang-Dalian expressway, 25 Km away from Old Yingkou Port and 50 Km away from Bayuquan port. It enjoys excellent geographic advantages with wide hinterland, convenient transportation as well as rich mineral resources, which provide good transportation and material foundation for expanding foreign trade.

Tongze occupies a land area of 132,000 sq.m, with floor area of 20,000 sq.m, and total fixed asset of 30 million RMB. Tongze has set up five branch factories including light burned magnesia factory, rebumed magnesia factory, electrosmelted magnesia factory, magnesia-carbon brick factory and purification factory. Now, it has 450 employees and 30 high or medium-level management officers.