Section 06 PRODUCTS OF THE CHEMICAL OR ALLIED INDUSTRIES 28 Inorganic chemicals; organic or inorganic compounds of precious metals , of rare 28 18 Artificial corundum, whether or not chemically defined; aluminium oxide; alumini 28 18 10 28 18 10 00 Commodity Code Description 28 18 10 00 00 - Artificial corundum, whether or not chemically defined 28 18 20 00 00 - Aluminium oxide, other than artificial corundum 28 18 30 00 00 - Aluminium hydroxide