... , optical glass 2.Basic chemical raw material, widely used in medicine, papermaking, metall Sodium Carbonate LA-K63 Soda ash is ... , it is used to remove sulfur and phosphorus, used in mineral processing and metals such as copper, lead, nickel, tin, ... kinescope, optical glass 2.Basic chemical raw material, widely used in medicine, papermaking, metallurgy, glass, textiles, dyes and other industrial3 ...