... ° Grade Standard Pigment,Metallurgical,Abrasive,Paint,Cosmetic,Construction, Refractory,Ceramics,Grinding ,Polishing,Glass Grade 3.Usage It is mainly ... is used as coloring agent for coloring painting on ceramics and enamelware and imitation leather or building material; ... making sun-proof coating, abrasive, green polishing compound, refractory materials and special printing ink for printing bank note. ...