... particle size dispersion, high chemical stability. Barium sulfate content of 98%, and its high whiteness, no black sports, no impurities, ... High inert chemicals, acid and alkali, has a good sunscreen type and weather resistance.High purity and low impurities, no trace ... using leading technology, its whiteness and barium sulfate content above 98%,high purity, free of impurities. No smell in the ...