Chapter 84 is the HS category covering machinery, mechanical appliances and parts thereof, including power machinery, agricultural machinery, metalworking machine tools, office equipment, automatic data processing equipment, lifting and handling machinery, food processing machinery, etc. The core characteristic of this chapter is that goods must have mechanical movement or power drive and be used for industrial or commercial purposes such as production, processing, and handling. 8477 belongs to the machine category in this chapter specifically for processing rubber or plastics and articles thereof. Heading 8477 covers machines defined in the subheading notes of this chapter for processing rubber or plastics or for the manufacture of articles thereof, but excludes machines listed in other headings of Chapter 84 (such as extruders and injection molding machines for plastics, which are separately named). This heading includes: injection molding machines, extruders, blow molding machines, vacuum forming machines and other thermoforming machines, molding or calendering equipment for rubber or plastics, etc. A vacuum forming machine is a thermoforming device that heats a plastic sheet and uses vacuum suction to make it conform to a mold for forming, and falls within the scope of this heading. HS code 847740 is a six-digit subheading. The first two digits '84' represent Chapter 84 (nuclear reactors, boilers, machinery, mechanical appliances and parts thereof). Digits 3-4 '77' represent heading 8477 (machinery for working rubber or plastics or for the manufacture of products from these materials, not specified or included elsewhere in this chapter). Digits 5-6 '40' represent subheading 847740 (vacuum molding machines and other thermoforming machines). This subheading further distinguishes vacuum forming machines from other thermoforming machines (such as pressure forming machines), but all are classified under the same subheading. In more detailed national tariff schedules, there may be further statistical subheadings. A vacuum forming machine uses vacuum negative pressure to make a heated and softened plastic sheet adhere to the mold surface for forming, and belongs to plastic thermoforming processing equipment. It is not named in other headings (such as 847710 injection molding machines, 847720 extruders, 847730 blow molding machines), so it is classified under 847740. This code specifically covers vacuum forming machines and similar thermoforming equipment, and is clearly distinguished from plastic processing machinery such as injection molding and extrusion.

Product name: The Chinese and foreign-language name of the declared commodity should accurately reflect the type of equipment, such as 'vacuum forming machine' or 'plastic vacuum forming machine'. Use: Explain the application field of the equipment, such as vacuum forming processing for plastic sheets to produce packaging boxes, trays, etc. Working principle: Briefly describe how the equipment works, such as 'by heating a plastic sheet and using vacuum suction to make it conform to the mold for forming'. Brand: Fill in the equipment brand (if no brand, write 'unbranded'), used for customs valuation and intellectual property verification. Model: Fill in the model or specification of the equipment, such as 'VF-1200', to facilitate identification of the specific equipment. Processing material: Clearly specify the type of plastic processed by the equipment, such as PVC, PET, PP sheets. Maximum forming size: Fill in the maximum sheet size or forming area the equipment can process, such as '1200mm x 800mm'. Power: Fill in the total power of the equipment (kW), used for energy consumption and classification reference. Customs declaration example: Product name: Plastic vacuum forming machine Use: Used for vacuum forming of PVC sheets to produce electronic product packaging trays Working principle: By heating the sheet and using vacuum negative pressure to make it adhere to the mold surface for forming Brand: ABC Model: VF-1200 Processing material: PVC Maximum forming size: 1200mm x 800mm Power: 15kW HS code: 84774000 Mistakenly classifying vacuum forming machines under other subheadings of 8477, such as 847780 (other rubber or plastics processing machines), because vacuum forming is not explicitly stated. Failure to emphasize the 'vacuum' principle during declaration may cause it to be mistaken for a pressure forming machine; although both fall under 847740, this affects statistics. Ignoring the processing material; if the equipment is used for non-plastic materials (such as paper), it may be classified under 8441 or another chapter.

The core basis for classification is the text and subheading structure of HS heading 8477. 8477 covers 'machinery for working rubber or plastics or for the manufacture of products from these materials, not specified or included elsewhere in this chapter'. Vacuum forming machines belong to plastic thermoforming equipment and are not named in other subheadings of 8477 (such as injection molding, extrusion, blow molding), so they are classified under 847740. At the same time, it must be confirmed that the equipment is mainly used for plastic processing; if used for other materials, it may be classified under other headings. 847710 Injection molding machine: Injection molding machines form products by injecting molten plastic into a mold, while vacuum forming machines heat a sheet and then use vacuum suction to form it; the principles and processing objects are different. 847720 Extruder: Extruders melt plastic and continuously extrude it through a die for forming, such as pipes and profiles, while vacuum forming machines form sheets intermittently. 847730 Blow molding machine: Blow molding machines use compressed air to inflate molten plastic into hollow products, while vacuum forming machines use vacuum suction to form sheets. 847780 Other rubber or plastics processing machines: This subheading is a residual provision; if vacuum forming machines were not named under 847740, they might be classified here, but 847740 already explicitly includes vacuum forming machines. 848079 Other molds: Molds are forming tools, while vacuum forming machines are processing equipment; their functions differ, but they are often imported together and must be declared separately. Is the equipment mainly used for thermoforming plastic sheets? Does it use vacuum negative pressure to make the sheet adhere and form? Is it not named in other subheadings (such as injection molding, extrusion, blow molding)? Are the declaration elements complete, especially the working principle and processing material? Is it confused with molds? Ensure that the equipment and molds are declared separately.

What is the difference in HS codes between vacuum forming machines and pressure forming machines? Both are classified under subheading 847740 because this subheading covers 'vacuum molding machines and other thermoforming machines'. However, the working principle must be clarified during declaration: vacuum forming machines use vacuum negative pressure, while pressure forming machines use compressed air or mechanical pressure. Customs may require technical documents for confirmation. If a vacuum forming machine is used to process non-plastic materials, which code should it be classified under? If used to process paper or paperboard, it may be classified under 8441 (other machinery for making pulp, paper or paperboard); if used to process metal, it may be classified under 8462 or 8463. It must be determined according to the actual processing material and machine function. For imported second-hand vacuum forming machines, is the HS code the same? Yes, the HS code does not change based on new or used condition and remains 847740. However, attention must be paid to customs regulatory requirements for used mechanical and electrical products, which may involve pre-shipment inspection, licenses, etc., and relevant certificates must be provided during declaration. How should molds supporting a vacuum forming machine be declared? Molds should be classified separately, usually under 8480 (metal molds) or 8481 (plastic molds), depending on the mold material and use. If imported together with the main machine, they must be declared separately and cannot be combined under one classification. How can I check the import tariff rate for vacuum forming machines? The tariff rate must be determined according to the importing country and trade agreements. You can check the tariff schedule on the destination country's customs official website or search using HS code 847740 in official databases. For imports into China, refer to the Import and Export Tariff of the People's Republic of China, but rates change, so the latest version should prevail. During declaration, is the power of a vacuum forming machine mandatory? Power is one of the declaration elements, but not all customs authorities require it mandatorily. It is recommended to provide it so that customs can determine the equipment's attributes and value. If it cannot be provided, you may write 'none' or 'unknown', but this may affect customs clearance efficiency. Are vacuum forming machines and blister forming machines the same type of equipment? Blister forming machines usually refer to a type of vacuum forming machine, mainly used to produce blister packaging. In HS classification, blister forming machines are also classified under 847740. However, when declaring, it is recommended to use the standard name 'vacuum forming machine' and state in the use that it is for blister packaging. If a vacuum forming machine has multiple functions (such as vacuum and pressure), how should it be classified? If the equipment has both vacuum and pressure forming functions, it is still classified under 847740 because this subheading covers other thermoforming machines. During declaration, the main function must be stated; if it cannot be distinguished, it may be classified according to the main function.