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 04 Auxiliary plant for use with boilers of heading 84.02 or 84.03 (for example, economis 84 04 90 Of goods of subheading 8404.10.11 and 8404.11.19 : Bodies, shells or casings 84 04 90 11 Of goods of subheading 8404.10.11 and 8404.11.19 : Bodies, shells or casings Commodity Code Description 84 04 90 11 00 Of goods of subheading 8404.10.11 and 8404.11.19 : Bodies, shells or casings