The first two digits of the HS code "25" represent salt, sulfur, limestone, cement, gypsum; products of the chemical industry or related industries.
The specific classification reasons are as follows:
- A wide range of mineral products: The "25" category covers various mineral products obtained from nature or simple processing, such as table salt, sulfur, limestone, etc.
- Cement and gypsum: Cement and gypsum are important materials in the construction industry and are typical products in this category.
- Basic raw materials for the chemical industry: Sulfur is a raw material for many chemical products, and this category also includes some basic raw materials for the chemical industry.
- Preliminary processed products: This category also includes some mineral products that have undergone preliminary processing, such as magnesium oxide, magnesium sulfide, etc.
More detailed subdivisions:
- 2501: Salt, sodium chloride or other pure sodium chloride
- 2502: Sulfur, precipitated sulfur, other forms of sulfur
- 2503: Magnesium sulfide
- 2504: Calcium sulfate (gypsum)
- 2505: Magnesium oxide, magnesium hydroxide
- 2506: Potash and sodium salts
- 2507: Calcium salts
- 2508: Boric acid and its salts
- 2509: Silicates
- 2510: Phosphates
- 2511: Sodium carbonate
- 2512: Calcium carbonate
- 2513: Calcium magnesium phosphates
- 2514: Manganese oxides
- 2515: Chromium oxides and their salts
- 2516: Cobalt oxides and their salts
- 2517: Nickel oxides and their salts
- 2518: Copper oxides and their salts
- 2519: Zinc oxides and their salts
- 2520: Magnesium oxides and their salts
- 2521: Barium oxides and their salts
- 2522: Strontium oxides and their salts
- 2523: Vanadium oxides and their salts
- 2524: Molybdenum oxides and their salts
- 2525: Tungsten oxides and their salts
- 2526: Titanium oxides and their salts
- 2527: Tin oxides and their salts
- 2528: Aluminum oxides and their salts
- 2529: Silicon oxides and their salts
- 2530: Sodium silicates
- 2531: Sodium thiosulfate
- 2532: Sodium hydrogen thiosulfate
- 2533: Commercial mixtures of sodium thiosulfate or sodium hydrogen thiosulfate
- 2534: Potassium dihydrogen phosphate
- 2535: Potassium hydrogen phosphate
- 2536: Sodium dihydrogen phosphate
- 2537: Sodium hydrogen phosphate
- 2538: Sodium tripolyphosphate
- 2539: Calcium tripolyphosphate
- 2540: Diatomite
- 2541: Bentonite
- 2542: Silica
- 2543: Clay
- 2544: Gypsum
- 2545: Wollastonite
- 2546: Silica powder
- 2547: Silica sand
- 2548: Silica stone
- 2549: Other forms of silica
First four digits explanation:
HS code: 2515
Classification description: Marble, limestone, and other stones with a specific gravity of 2.5 or more used for monuments or buildings, as well as gypsum, whether roughly worked or merely cut into rectangular (including square) blocks or sheets by sawing or other means.
Six-digit explanation:
HS code: 2515.20
Classification: Marble, limestone, and other stones with a specific gravity of 2.5 or more used for monuments or buildings, as well as alabaster, whether roughly worked or merely cut into rectangular (including square) shapes by sawing or other means.
Meaning: Refers to other limestone used for monuments or buildings, as well as alabaster, whether roughly worked or merely cut into rectangular (including square) shapes by sawing or other means.
8-10 digit explanation:
HS code: 2515200000
Classification: Marble, limestone travertine, and other stones with a specific gravity of 2.5 or more used for monuments or buildings, as well as gypsum, whether roughly worked or merely cut into rectangular (including square) shapes by sawing or other means.
Explanation: This classification includes marble, limestone travertine, and other stones with a specific gravity of 2.5 or more used for monuments or buildings, as well as gypsum, whether roughly worked or merely cut into rectangular (including square) shapes by sawing or other means.
Examples of products: * Limestone * Marble * Travertine * Gypsum * Sodium chloride (table salt) * Sulfur * Calcium carbonate * Sodium carbonate * Calcium sulfate * Sodium silicates * Potassium dihydrogen phosphate * Sodium thiosulfate * Silica sand * Silica stone * Wollastonite * Diatomite * Bentonite * Clay * Gypsum * Alabaster