Specification: 101, 110, 120, 130, 140, 190, etc.
Applications: Small soft grain, easier for grinding, applied as colorant for paint production of the coatings industry, rubber coloring, marble production, floor terrazzo and wall painted finish, as the colorant and filler for the production of other ferro-containing chemical products, plastic coloring, asbestos, varnished cloth, painted paper, leather and leather finishing agent, and as polishing material for hardware equipment, optical glass, optical instrument and jade...