The Hollow Brick Factory of Shuang Yashan Oriental Wall Material Co., Ltd.

The product line, with gangue as its material, is appraised as model line in comprehensive utilizing material by the former State Economic and Trade Commission. The product line adopts Semi hard Extrussion and once setting brick system. The calcining kiln is first-class among the world tunnel kilns, with a length of 157.8 meters and a width of 9.23 meters, the highest burning temperature of which is 1050 degrees. The 236 sets of equipment on the product line are controlled by 4 program-control computers and an industrial computer. The temperature and pressure of drying and burning process are controlled automatically by computers.