Golden Bright Enterprise also known as Datong Coal Industrial Jinyu Kaolin Chemical Corp.大同煤业金宇高岭土化工有限公司 is a subsidiary of Datong Coal Mine Group. They offer kaolin clays under two types: Calcined Kaolin and Hydrous Aluminum Silicates. The Calcined Kaolin are prepared by methods of water-washing to attain brightness, better residues, purity and requested particle size distribution. Hydrous Aluminum Silicates contain about 14% water that is bonded chemically inside a crystalline structure. They can vary in pH, brightness, residue and particle size.