B301
lithopone
White pigment, zinc sulfate content is 28%. Hiding power is stronger than zinc oxide,lower than titanium dioxide,good heat endurance.
B302
lithopone
White pigment, zinc sulfate content is 28%. Dispersancy is better than B301 after surface preparation.
B311
lithopone
White pigment,zinc sulfate content is 30%. Stronger hiding power and reducing power than B301. Better dispersancy.