R6638是含有硅、铝无机和有机成分以及表面处理过的金红石型钛白粉。它具有平均的粒径分布，良好的水分散性，良好的遮盖能力和高耐候性。它主要用于要求高水分散性的水基系统，如造纸、水性涂料（特别是内、外墙乳胶漆）和水性油墨的生产。
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.
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