... 4. Usage: Natural color sand are the main raw material of the stone lacquer, natural real paint, granite paint, anti- ... can be used in the manufacture of marble, floor tile, decorative ceramic tiles and sanitary ware and so on. With wear-resistant anti ... added dyes with non-toxic, tasteless and pollution-free, anti-corrosion, acid and alkali, high strength, anti-exposure, and never change color, etc.6 ...