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 15 THE HUMIDITY CANNOT BE SEPARATELY REGULATED. 84 15 90 PARTS: AIR CONDITIONING MACHINES....... Commodity Code Description 84 15 90 00 PARTS: AIR CONDITIONING MACHINES.......