8-12 （mesh）

12-18（mesh）

18-20（mesh） 

After expanding, it is widely used as the materials of keeping warm and heat insulation in the field of construction.  

20-30（mesh）

30-50（mesh）

After expanding, it can be used as covering agent and deslagging agent in the industry of casting steel.

50-70（mesh）

After expanding, it can be used as the filtering agent in the field of beer and medicine, and the insulation for cryogenic tanks of oxygen machine.

72%

0.09%

12.31%

0.54%

0.06%

0.14%

1.00%

4.67%

3.29%

0.04%