| 28 | | | HS Code for Inorganic chemicals; inorganic or organic compounds of precious metals, radioactive elements, rare land metals or isotope metals |
| 2805 | | HS Code for Alkali or alkaline-earth metals; rare-earth metals scandium and yttrium whether or not intermixed or interalloyed; mercury |
| | 28051990 | Other alkali and alkaline earth metals |
| | 28053011 | Neodymium |
| | 28053012 | Dysprosium |
| | 28053013 | Terbium |
| | 28053014 | Lanthanum |
| | 28053015 | Cerium |
| | 28053016 | Metal praseodymium |
| | 28053017 | Yttrium |
| | 28053019 | Other rare earth metals |
| | 28053021 | Other battery grade rare earth metals, scandium and yttrium |
| | 28053029 | Other rare earth metals, scandium and yttrium |
| | 28054000 | Hg |
| 2806 | | HS Code for Hydrogen chloride (hydrochloric acid); |
| | 28061000 | Hydrogen chloride (hcl) |
| | 28062000 | Chlorosulfonic acid |
| 2807 | | HS Code for Sulphuric acid; oleum |
| | 28070000 | Sulfuric acid, fuming sulfuric |
| 2808 | | HS Code for Nitric acid; sulphonitric acids |
| | 28080000 | Nitric acid, nitrate and sulfonate |
| 2809 | | HS Code for Diphosphorus pentaoxide; phosphoric acid; polyphosphoric acids whether or not chemically defined |
| | 28091000 | Phosphorus pentoxide |
| | 28092011 | Food grade phosphoric acid |
| | 28092019 | Phosphoric acid and other metaphosphoric acid, pyrophosphoric acid |
| | 28092090 | Other multi-acid |
| 2810 | | HS Code for Oxides of boron; boric acids |
| | 28100010 | Boron oxide |
| | 28100020 | Boric acid |
| 2811 | | HS Code for Other inorganic acids and other in-organic oxygen compounds of non-metals |
| | 28111100 | Hydrofluoric acid |
Harmonized Tariff Schedule of China inquiry: textile
