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 99 Other : Of goods of subheading 8421.23.11 or 8421.23.91 84 21 99 96 Other : Of goods of subheading 8421.23.11 or 8421.23.91 Commodity Code Description 84 21 99 96 00 Other : Of goods of subheading 8421.23.11 or 8421.23.91