| Tariff Classification |
| section 06 | Products of the chemical or allied industries |
| chapter 28 | Inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes |
| 28.15 | Sodium hydroxide (caustic soda); potassium hydroxide (caustic potash); peroxides of sodium or potassium: |
| 2815.20 | －Potassium hydroxide (caustic potash) |
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