Chapter 84 is the core chapter in the HS classification system covering mechanical appliances, machinery, and their parts, ranging from power machinery (such as steam boilers and internal combustion engines) to various processing machines, office equipment, and automatic data processing equipment. This chapter emphasizes the function and working principle of machines rather than their specific use, and is the primary chapter for classifying mechanical and electrical products in international trade. Understanding this chapter requires grasping the boundary between 'machines' and 'electrical equipment' (the latter mainly classified in Chapter 85), as well as the principle of distinguishing 'general-purpose parts' from 'special-purpose parts'. Heading 8479 is a 'residual' heading covering machines and mechanical appliances having individual functions, not specified or included elsewhere in this chapter. Its core characteristic is that the machine must have an individual function, i.e., it can independently perform a certain processing or operation without depending on other machines, and that function is not specifically listed in other headings of Chapter 84 (such as machine tools of 8456-8466, office machines of 8470-8472, etc.). Common goods include: industrial robots, vending machines, public works machinery, ship steering gear, and various specialized automated equipment. The first 2 digits '84' represent Chapter 84, i.e., 'Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof', which is the chapter with the highest concentration of mechanical and electrical products in the entire tariff schedule. The 3rd-4th digits '79' represent heading 8479, i.e., 'Machines and mechanical appliances having individual functions, not specified or included elsewhere in this chapter'. The 5th-6th digits '89' represent subheading 847989, i.e., 'Other special-purpose machinery', which further excludes subheadings already specifically listed under 8479 (such as 847910 public works machinery, 847920 machinery for extraction or processing, 847930 machinery for working wood, etc.), and classifies the remaining special-purpose machines with individual functions under this code. The overall logic is: chapter → heading → subheading, eliminating layer by layer, ultimately falling into the 'other' subheading. This commodity is classified under 847989 because it belongs to the category of machines under Chapter 84, has an individual function, and its function is not specifically listed in other headings of Chapter 84. Meanwhile, within heading 8479, it does not belong to any already-listed subheading (such as 847910 to 847980), and therefore can only be classified under the 'other special-purpose machinery' subheading. Adjacent codes such as other subheadings under 8479 often have more specific function descriptions, while 847989 is a residual subheading applicable to special-purpose machinery that cannot be classified under more specific subheadings.

Product name: The Chinese and English names of the declared commodity, which should accurately reflect the function or use of the machine, avoiding general terms such as 'machine' or 'equipment'. Use: Explain what industry or production process the machine is used for, such as 'used for lithium battery electrode sheet cutting', 'used for food packaging', etc. Working principle: Briefly describe how the machine operates, such as 'cutting by servo motor-driven blades', 'welding by laser', etc. Brand: Fill in the brand or manufacturer name of the machine; if there is no brand, fill in 'no brand'. Model: Fill in the specific model of the machine, which should be consistent with the physical nameplate. Power: If the machine has a rated power, it must be declared, usually in kilowatts (kW). Whether it has individual function: Confirm whether the machine can independently complete a certain processing or operation without depending on other machines. Product name: Fully automatic lithium battery electrode sheet cutting machine; Use: Used for fixed-length cutting of electrode sheets on lithium battery production lines; Working principle: Cutting electrode sheets to set length by servo motor-driven cutting blade; Brand: XX; Model: ABC-2000; Power: 5.5kW; Whether it has individual function: Yes. Mistakenly declaring machine parts as complete machines, resulting in classification errors. Failing to accurately describe the working principle, resulting in classification under the electrical equipment chapter. Ignoring the 'individual function' requirement and declaring accessory equipment separately.

The core basis for classification is the provisions of the 'Import and Export Tariff' and the 'HS Explanatory Notes' regarding heading 8479. First, confirm that the commodity belongs to the category of machines under Chapter 84 and has an individual function; second, check whether that function is already specifically listed in other headings of Chapter 84 (such as machine tools of 8456-8466, office machines of 8470-8472, etc.); if not listed, classify under 8479; finally, under 8479, check whether there is a more specific subheading (such as 847910 to 847980); if not, classify under 847989. In addition, reference should be made to the 'Classification Decisions' and 'Tariff Explanatory Notes' for the interpretation of 'individual function'. 8479.10 Public works machinery: 847910 specifically refers to machinery used for public works, such as road rollers, pavers, etc. If the machine is used for public works, it should be classified under 847910 rather than 847989. 8479.20 Machinery for the extraction or preparation of animal or fixed vegetable fats or oils or microbial oils: 847920 is specifically for oil extraction or processing. If the machine is used in this field, it should be classified under 847920. 8479.30 Machinery for working wood, cork, bone, hard rubber, hard plastics or similar hard materials: 847930 is specifically for processing hard materials. If the machine is used for working wood, etc., it should be classified under 847930. 8479.81 Machinery for working metal: 847981 is specifically for working metal, including wire coil winders, etc. If the machine is used for metal processing, it should be classified under 847981 first. 8479.89 Other special-purpose machinery: 847989 is a residual subheading applicable to special-purpose machinery not classified under 847910 to 847980. If the machine's function does not conform to the above subheadings, it is classified under 847989. Does the machine belong to the scope of Chapter 84? Does the machine have an individual function? Is the function already listed in other headings of Chapter 84? Does it belong to a listed subheading under 8479? Should it be classified as parts?

How to determine whether a machine has an 'individual function'? Individual function means the machine can independently complete a certain processing or operation without depending on other machines. For example, an automatic welding robot can independently complete welding, while a manipulator that is only part of a production line may be regarded as an accessory device. Judgment should be made in conjunction with the 'HS Explanatory Notes' and actual usage. What is the difference between 847989 and 847981? 847981 specifically refers to machinery for working metal, such as wire coil winders, metal processing centers, etc.; 847989 is a residual subheading applicable to special-purpose machinery not classified under other subheadings of 8479. If the machine is used for working metal, it should be classified under 847981 first. What elements should be noted when declaring machines classified under 847989? Key declarations include product name, use, working principle, brand, model, power, and whether it has an individual function. The description of working principle and use should be specific, avoiding generalities, to prove that it meets the classification requirements of 847989. If a machine has both mechanical and electrical functions, how should it be classified? If the main function of the machine is performed by the mechanical part and the electrical part only serves a control role, it is usually classified under Chapter 84; if the main function is performed by the electrical part, it may be classified under Chapter 85. Judgment should be based on the definition of 'machine' in the 'HS Explanatory Notes' and the primary and secondary functions. What is the export tax rebate rate for 847989? The export tax rebate rate is adjusted according to national policies. The specific rate should be queried in the latest 'Export Tax Rebate Rate Database'. It can be checked through the official websites of the General Administration of Customs or the State Taxation Administration, or by using professional tariff query tools. What regulatory documents are required for importing machines under 847989? Regulatory documents depend on the specific type and use of the machine. Common ones may include automatic import licenses (O certificates), mechanical and electrical product import licenses, etc. Confirmation should be made according to the 'Catalogue of Goods Subject to Import License Administration' and customs regulations. How to query classification decisions for 847989? You can log in to the official website of the General Administration of Customs, enter the 'Classification Decisions' section, and query by HS code or commodity name. You may also refer to the relevant parts of the 'Customs Import and Export Tariff of the People's Republic of China' and the 'HS Explanatory Notes'. If machines under 847989 are imported disassembled, how should they be declared? If imported disassembled but having the characteristics of a complete machine, they should be classified and declared as a complete machine; if parts are imported separately, they should be classified as parts. The specific judgment should be based on the provisions of the 'HS Explanatory Notes' regarding 'complete articles' and 'parts'.