GENERAL RULES 1, 3(b) AND 6 FOR THE INTERPRETATION OF THE COMBINED NOMENCALTURE.
SUBHEADING NOTE 1 (b) TO CHAPTER 79.
CNEN EXCLUSION NOTE TO 9503 00 (D).
HSEN NOTE (8) TO HEADING 7907.
THE TEXT TO HS CODES 7907, 7907 00, 7907 00 00 AND 7907 00 00 00.