Section 06 Products of the chemical or allied 28 Inorganic chemicals; organic or inorganic compounds of precious metals, of rare earth metals, of radioactive elements or isotopes 28 18 Aluminium oxide (incl. artificial corundum); aluminium hydroxide 28 18 20 Aluminium oxide, other than artificial corundum) Commodity Code Description 28 18 20 00 Aluminium oxide, other than artificial corundum)