Chapter 15 is the HS classification category for 'Animal or vegetable fats and oils and their cleavage products; prepared edible fats; animal or vegetable waxes'. It covers fats and oils extracted from animals or plants and their processed products, including virgin, refined, hydrogenated, interesterified and other modified fats and oils, as well as industrial fats, oils and waxes. However, it excludes separately specified chemicals (such as stearic acid and glycerol) and mineral waxes. This chapter is an intersection of food and chemical industries, and classification requires close attention to the source, processing technology and use of the fats and oils. Heading 1518 covers 'Animal or vegetable fats and oils and their fractions, boiled, oxidised, dehydrated, sulphurised, blown, polymerised by heat in vacuum or in inert gas or otherwise chemically modified, excluding those of heading 1516; inedible mixtures or preparations of animal or vegetable fats or oils or of fractions of different fats or oils of this chapter, not elsewhere specified or included'. Simply put, it refers to chemically modified fats and oils (such as oxidised oils, blown oils and sulphurised oils) and inedible mixed fats and oils, but excludes hydrogenated, interesterified and other fats and oils of heading 1516. HS code 151800 has 6 digits: the first 2 digits '15' represent Chapter 15 (Animal or vegetable fats and oils and their cleavage products; prepared edible fats; animal or vegetable waxes), which is the highest classification level and defines the goods as belonging to the fats and oils category. Digits 3-4 '18' represent heading 1518, further limited within the chapter to chemically modified fats and oils and inedible mixed fats and oils, distinguishing it from 1516 (hydrogenated, interesterified, etc.) and 1517 (margarine, etc.). Digits 5-6 '00' indicate that no subheading is established under this heading, and all goods meeting the description of heading 1518 are classified under this code. Therefore, 151800 is a complete 6-digit subheading applicable to industrially modified fats and oils and inedible mixed fats and oils. The goods are classified under 151800 rather than 1516 or 1517 because they have undergone chemical modification such as oxidation, blowing or sulphurisation, or are inedible mixed fats and oils. 1516 covers modified fats and oils such as hydrogenated and interesterified ones, but they are usually for edible or specific industrial uses; 1517 covers edible products such as margarine. 151800 specifically covers inedible modified fats and oils not elsewhere specified or included, so industrial fats and oils that have been chemically modified and are inedible should be classified under this code.

Product Name: The specific name of the declared goods, such as 'oxidised vegetable oil' or 'blown fish oil', which must be consistent with the commercial invoice. Composition and Content: List the main components and percentages, such as fatty acid composition, glyceride content and additives. Processing Method: Describe in detail the chemical modification method, such as oxidation, blowing, sulphurisation or polymerisation, and whether vacuum heating is used. Use: Indicate the industrial use, such as lubricant, coating or rubber additive, and emphasise that it is inedible. Packaging Specifications: Packaging form and net weight, such as iron drum packaging or IBC tonne drum, which affect inspection and classification. Source: Animal or vegetable source, such as soybean oil, beef tallow or fish oil, which must be specific to the species. Brand Type: Whether there is a brand, and the brand name (if none, indicate 'none'). Product name: oxidised soybean oil; Composition and content: oxidised soybean oil 98%, antioxidant 2%; Processing method: blown oxidation, acid value ≤5, peroxide value ≤10; Use: used as rubber plasticiser, inedible; Packaging specifications: 200kg iron drum; Source: soybean oil; Brand type: no brand. Misreporting hydrogenated oil as oxidised oil; hydrogenated oil should be classified under 1516, while oxidised oil under 1518. Failing to indicate inedible use, leading to mistaken classification under edible fats and oils chapter. Vague description of processing method, such as writing only 'modified' without specifying the chemical modification method.

The core basis for classification is the processing method and use of the goods. First, it must have undergone chemical modification (such as oxidation, blowing, sulphurisation or polymerisation), rather than simple refining or hydrogenation. Second, it must be inedible and not elsewhere specified or included in other headings of this chapter. If it belongs to modified fats and oils of heading 1516 such as hydrogenated or interesterified ones, even if inedible, it should be classified under 1516. If it is an edible mixed fat or oil, it is classified under 1517. Therefore, 151800 specifically refers to inedible, chemically modified fats and oils that are not included in 1516. 1516 Hydrogenated, interesterified and other modified fats and oils: 1516 covers modified fats and oils such as hydrogenated, interesterified and re-esterified ones, whether edible or not; 1518 covers modified fats and oils such as oxidised, blown and sulphurised ones, and must be inedible. The core difference lies in the modification method and use. 1517 Margarine and other edible fat and oil preparations: 1517 covers edible fat and oil preparations such as margarine and shortening, which are food; 1518 covers inedible industrial fats and oils, which are not edible. 1520 Crude glycerol, glycerol water, etc.: 1520 covers crude glycerol, glycerol water and glycerol lyes, which are cleavage products of fats and oils; 1518 covers modified fats and oils themselves, which are not cleaved. 3403 Lubricant preparations: 3403 covers lubricant preparations containing petroleum or fats and oils, but usually as formulated products; 1518 covers pure modified fats and oils that have not been formulated with other substances into lubricants. 3824 Other chemical products: 3824 covers chemical products not elsewhere specified or included; if modified fats and oils have been formulated into specific chemical preparations, they may be classified under 3824; 1518 covers the fats and oils themselves. Has the goods undergone chemical modification such as oxidation, blowing or sulphurisation? Is the goods clearly inedible? Does the goods not belong to hydrogenated, interesterified or other modifications of 1516? Has the goods not been formulated with other substances into products of other headings? Does the goods belong to Chapter 15 and not elsewhere specified or included in other headings?

How to inquire about the tariff rate for 151800? Tariff rates change with national policies and free trade agreements. It is recommended to check the latest rates through the official website of the General Administration of Customs of China or the 'Single Window', or use an HS code query tool by entering 151800 and the country of origin and destination to obtain MFN rates, agreement rates, etc. Note that rates may be adjusted annually. What is the main difference between 151800 and 1516? 1516 covers modified fats and oils such as hydrogenated and interesterified ones, whether edible or not; 1518 covers modified fats and oils such as oxidised, blown and sulphurised ones, and must be inedible. If the processing method is hydrogenation, even if inedible, it is classified under 1516; if it is oxidation, it is classified under 1518. Where should industrial fats and oils be classified if they have not undergone chemical modification? If they have not undergone chemical modification and are only refined or virgin fats and oils, they should be classified under the corresponding headings of Chapter 15 according to source and use, such as 1507-1515. If inedible, they may be classified under 1515 or others. The specific classification depends on processing and use. What are the common customs inspection priorities when declaring 151800? Customs will focus on inspecting the processing method, use and proof of inedibility. They may require composition analysis, processing technology description, MSDS, etc. Ensure the declared processing method is accurate, such as 'oxidation' rather than 'hydrogenation', and indicate inedibility. How to determine the HS code for industrial fats and oils sold via cross-border e-commerce? First confirm whether the goods have undergone chemical modification and are inedible. If so, classify under 151800. If edible or unmodified, classify under other codes according to the actual situation. It is recommended to consult a customs broker or use the customs pre-classification service. Can goods under 151800 enjoy preferential tariff rates under free trade agreements? It is necessary to check the concession schedule of the specific free trade agreement (such as RCEP or China-ASEAN) to confirm whether 151800 is within the preferential scope. At the same time, the rules of origin must be met, such as regional value content. It is recommended to check the agreement text or consult customs. What are the consequences of mistakenly declaring 151800 as 1516? It may lead to classification errors, affecting tariff rates, regulatory conditions (such as licences) and statistics. If discovered by customs, it may require supplementary tax payment, fines, and even affect the enterprise's credit. It is recommended to declare accurately and apply for pre-classification if necessary. How to obtain the regulatory conditions for 151800? Regulatory conditions vary by country. In China, you can check the regulatory conditions for 151800 through the 'Import and Export Tariff' of the General Administration of Customs or the 'Single Window', such as whether commodity inspection or licences are required. You can also consult the local customs.