SiO2: 35%~60%, Whiteness: 80%~100%, have many grades, can be used in plastic, paint and costing, food,cosmetic industries. talc powder is one of our main products, which has a very broad range(from 325 mesh to 5000 mesh) and can be used in many industries,such as plastic industry, paint and coating industry, food industry, cosmetic industry, etc.The specifications are as follow:Chemical SiO2: 35 ...