- supply talcum powder
- 2016-11-03 05:07
- we manufacture and export talcum lump and talcum powder, we can offer a big quantityof paper grade talcum powder and pai
- supply silicon carbide
- 2016-10-26 07:02
- Black silicon carbide is mainly made of quartz sand,petroleum coke,smelted by above2500 in the electric furnace , the ha