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 42 Machines for type-setting, making printing blocks..; printing components 84 42 40 Parts of the foregoing machinery, apparatus and equipment Commodity Code Description 84 42 40 00 Parts of the foregoing machinery, apparatus and equipment