- Cement
- 2016-11-05 00:33
- Cement concrete basis for the different tack, and is divided into different grade. In accordance with the different comp
- Rubber (DL-69)
- 2016-10-31 14:38
- DL-69 (also known as silicon on June 9, or Si-69) is a two-multi-functional group of organic sulfur silane, the chemical