Section 16 Machinery and mechanical appliances; electrical equipment; parts thereof; sound recorders and reproducers, television image and sound recorders and reproducers and parts and accessories of such articles 84 Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof 84 21 Centrifuges; filtering/purifying machinery... for liquids or gases 84 21 31 For machinery of heading 84.29 or 84.30 84 21 31 10 For machinery of heading 84.29 or 84.30 Commodity Code Description 84 21 31 10 00 For machinery of heading 84.29 or 84.30