ABRASIVE COMPOUNDS-NAMELY, GRINDING AND LAPPING COMPOUNDS, POLISHING AND FINISHING COMPOUNDS, VALVE GRINDING COMPOUNDS; [ COATED ABRASIVE MATERIALS-NAMELY, ABRASIVE CLOTHS, PAPERS AND FIBROUS MATERIALS COATED WITH ADHESIVE SUBSTANCES TO WHICH ABRASIVE GRAINS ARE APPLIED; ] ABRASIVE GRAINS; ABRASIVE WHEELS AND ABRASIVE DISKS