Section 15 BASE METALS AND ARTICLES OF BASE METAL 74 COPPER AND ARTICLES THEREOF 74 09 COPPER PLATES, SHEETS AND STRIP, OF A THICKNESS EXCEEDING 0.15 MM. 74 09 21 PLATES,SHEETS & STRIP > 0.15MM OF COPPER-ZINC BASED ALLOYS(BRASS)IN COILS Commodity Code Description 74 09 21 00 PLATES,SHEETS & STRIP > 0.15MM OF COPPER-ZINC BASED ALLOYS(BRASS)IN COILS