Harmonized System Code Classification

The first two digits of the HS code "28" represent chemical industry products.

Specifically, this chapter includes:

• Inorganic chemicals: For example, aluminum oxide, sodium chloride, sulfuric acid, etc.
• Organic chemicals: For example, ethylene, propylene, benzene, methanol, etc.
• Derivatives of organic chemicals
• Fine chemicals
• Isotopes of chemical elements
• Other chemical industry products

Reason for classification:

The classification of the "28" chapter is based on the chemical composition and chemical properties of the product. If a product is produced through a chemical process or its primary use is in the chemical industry, it is typically classified into this chapter.

In short, any product that is manufactured through a chemical reaction or used as a raw material, intermediate, or finished product in the chemical industry falls within the scope of Chapter 28.

I hope this explanation is helpful to you. If you can provide a more specific HS code, I can offer a more detailed explanation.

The first four digits of the HS code 2853 represent:

Phosphides, whether or not chemically defined, excluding iron phosphide; other inorganic compounds (including distilled water or conductive water and water of similar purity); liquid air (whether or not rare gases have been removed); compressed air; amalgams of mercury, excluding amalgams of precious metals.

The six-digit explanation: HS code: 2853.90

Classification: Phosphine, whether or not chemically defined; excluding iron phosphide; other inorganic compounds (including distilled water or conductive water and water of similar purity); liquid air (whether or not rare gases have been removed); compressed air; amalgams of mercury, excluding amalgams of precious metals.

Specific meaning: This includes phosphine, other inorganic compounds, liquid air, compressed air, and mercury amalgams, specifically:

• Phosphine, whether or not chemically defined
• Excluding iron phosphide
• Other inorganic compounds (including distilled water or conductive water and water of similar purity)
• Liquid air (whether or not rare gases have been removed)
• Compressed air
• Mercury amalgams, excluding amalgams of precious metals
• Other --> Other --> Gallium arsenide wafers, undoped

8-10 digit explanation: HS code: 2853905000 Classification: Phosphides, whether or not chemically defined, excluding iron phosphide; other inorganic compounds (including distilled water or conductive water and water of similar purity); liquid air (whether or not rare gases have been removed); compressed air; amalgams of mercury, excluding amalgams of precious metals Explanation: This HS code belongs to the category of phosphides, whether or not chemically defined, excluding iron phosphide; other inorganic compounds (including distilled water or conductive water and water of similar purity); liquid air (whether or not rare gases have been removed); compressed air; amalgams of mercury, excluding amalgams of precious metals. Specifically, it refers to "other phosphides of metals or non-metals."

Examples of products: * Gallium arsenide wafers, undoped * Phosphine * Mercury amalgams (excluding those of precious metals) * Compressed air * Liquid air * Distilled water * Conductive water