2804: Hydrogen, rare gases and other nonmetals.
Total
28
Children
280410: Hydrogen
280421: Argon
280429: Other
280430: Nitrogen
280440: Oxygen
280450: Boron; tellurium
280461: Containing by weight not less than 99.99 % of silicon
280469: Other
280470: Phosphorus
280480: Arsenic
280490: Selenium
Corresponds to
hs_2007:
No match
Translates to: