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 40 BOOK-BINDING MACHINERY, INCLUDING BOOK-SEWING MACHINES. 84 40 90 PARTS OF BOOK-BINDING MACHINERY, INCLUDING BOOK-SEWING MACHINES Commodity Code Description 84 40 90 00 PARTS OF BOOK-BINDING MACHINERY, INCLUDING BOOK-SEWING MACHINES