Dashiqiao Zhongyi Magnesia Brick Co. ，Ltd. was established in 2021, inheriting the Dashiqiao Magnesium Brick Factory of China Academy of Building Materials Science established in 1992. The company has a fixed assets investment of 120 million yuan, covers an area of 20000 square meters, 120 employees, an output value of 200 million yuan, and an annual output of 30000 tons of various magnesium products. There is a production line with a 98 meter ultra-high temperature tunnel kiln and 1 1250 ton and 5 semi-automatic 630 ton press machines as the main equipment to produce high-quality alkaline refractory materials. For thirty years, we have been focusing on the production and research of various alkaline refractory materials required by the building materials industry, especially glass kilns.