Harmonized System Code Classification

The first two digits of the HS code "31" represent Mineral Fuels, Mineral Oils and Products Thereof.

In detail, this classification includes the following main contents:

• Coal: Including various types of coal, such as lignite, bituminous coal, coking coal, etc.
• Petroleum and Petroleum Products: Including crude oil, gasoline, diesel, kerosene, lubricating oil, paraffin, etc.
• Natural Gas: Including liquefied natural gas (LNG), compressed natural gas (CNG), etc.
• Other Mineral Fuels: For example, shale oil, oil shale, asphalt, etc.

Reason for Classification:

These products are derived from mineral resources and are obtained through mining, refining, processing, and other methods. They share common physical and chemical properties and uses, mainly as fuel, energy, or chemical raw materials. Therefore, customs classify them into the chapter "31".

In summary, "31" represents mineral products extracted from underground, used to provide energy or as industrial raw materials.

The first four digits of the HS code "3104" correspond to:

Mineral or Chemical Fertilizers, Potash

Specific information is as follows:

• Classification: Mineral or chemical fertilizers, potash
• General Duty: Not provided
• Preferential Duty: Not provided
• Duty 2: Not provided
• Quota Quantity: Not provided
• Additional Duty: Not provided
• Unit of Measurement: Not provided

The six-digit HS code explanation:

HS Code: 3104.20

Classification: Mineral or chemical fertilizers, potash

Specific Meaning: Potassium chloride, with potassium oxide (K₂O) content not exceeding 62%.

The 8-10 digit HS code explanation:

HS Code: 3104200050
Classification: Mineral or chemical fertilizers, potash → potassium chloride → potassium oxide (K₂O) content exceeding 62% (by weight)

Explanation: This HS code corresponds to potassium chloride fertilizer, with potassium oxide (K₂O) content exceeding 62% (by weight).

Examples of Products:

• Potassium Chloride (KCl) Fertilizer: A common type of potassium fertilizer used in agriculture.
• Potash (Potassium Ore): A mineral containing potassium compounds, used in the production of potassium fertilizers.
• Potassium Sulfate: A type of potassium fertilizer, often used in specific soil conditions.
• Mixed Potassium Fertilizers: Fertilizers that contain potassium along with other nutrients like nitrogen or phosphorus.