... , battery material, rare-earth material, nonmetal ore, painting, dye, ink, calcium, titanium, pesticide, Food and pharmaceutical raw materials and ... 1 No cracking, good roundness, minor variegations allowed, no water absorption, Qualified product≥ 5.95≤ 5 No cracking, ... average roundness, minor variegations allowed, no water absorption Ceria Grinding mediaSuperior product≥ 6.2≤ 10 No ...