B301: white pigment, zinc sulfide content is 28%. Covering power is stronger than zinc oxide, worse than titanium dioxide, and good heat resistance.

B302: white pigment, zinc sulfide content is 28%. After surface treatment, it has better dispersion than B301

B311: white pigment, zinc sulfide content is 30%. Compared with B301, it has stronger covering power and fading power also better dispersibility

Usage:

Used for coloring paint, ink, rubber, rubber products, paper, lacquer cloth, oil cloth, leather, watercolor pigment, paper, enamel etc. It also used as adhesive in the production of electric beads