2818 | | Artificial corundum, whether or not chemically defined; aluminum oxide; aluminum hydroxide: | | | | |
2818.10.20 | 10 | White, pink or ruby, containing more than 97.5 percent by weight of aluminum oxide | kg | | | |
2818.20.00 | 00 | Aluminum oxide, other than artificial corundum | kg | Free | | 1.1¢/kg |