Top natural barium sulfate, after physical classification, solvent dissolution, 1300-degrees impurity removal (All heavy metals volatilized, and all SGS data content was 0) and other strict production processes, to ensure the long-term stability of barium content, whiteness, specific gravity and other specifications, particle size can be customized. The product has a good whiteness graph, especially suitable for high weather resistance requirements. Applications: heavy anticorrosion, marine paint, high-grade outdoor paint and other high-demand products.