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; condensers for vapour power units Commodity Code Description 84 04 10 Auxiliary plant for use with boilers of heading 84.02 or 84.03 84 04 20 Condensers for steam or other vapour power units 84 04 90 Parts