| 28 | | | HS Code for Inorganic chemicals; inorganic or organic compounds of precious metals, radioactive elements, rare land metals or isotope metals |
| 2835 | | HS Code for Phosphinates (hypophosphites) phosphonates (phosphites) and phosphates; polyphosphates whether or not chemically |
| | 28352510 | The positive feed grade dicalcium phosphate (dicalcium phosphate) |
| | 28352520 | Positive food grade calcium hydrogen phosphate (dicalcium phosphate) |
| | 28352590 | Other positive calcium hydrogen phosphate (dicalcium phosphate) |
| | 28352600 | Other calcium phosphate |
| | 28352910 | Trisodium phosphate |
| | 28352990 | Other phosphates |
| | 28353110 | Food grade sodium tripolyphosphate (stpp) |
| | 28353190 | The other three sodium tripolyphosphate (stpp) |
| | 28353911 | Food grade sodium hexametaphosphate |
| | 28353919 | Other hexametaphosphate |
| | 28353990 | Other polyphosphates |
| 2836 | | HS Code for Carbonates; peroxocarbonates (percarbonates); commercial ammonium carbonate containing ammonium carbamate |
| | 28362000 | Sodium carbonate (soda ash) |
| | 28363000 | Sodium bicarbonate (baking soda) |
| | 28364000 | Potassium carbonate |
| | 28365000 | Calcium carbonate |
| | 28366000 | Barium carbonate |
| | 28369100 | Lithium carbonate |
| | 28369200 | Strontium carbonate |
| | 28369910 | Magnesium carbonate |
| | 28369930 | Cobalt carbonate |
| | 28369940 | Goods ammonium carbonate and other ammonium carbonate |
| | 28369950 | Zirconium carbonate |
| | 28369990 | Other carbonates and percarbonates |
Harmonized Tariff Schedule of China inquiry: textile
