Chapter 85 covers electrical machinery and equipment and parts thereof; sound recorders and reproducers, television image and sound recorders and reproducers, and parts and accessories of such articles. This chapter includes electrical equipment for generation, transformation, storage, use of electricity, magnetic therapy, electrothermics, electric lighting, electric communication, electric recording, and their dedicated parts. However, certain specific electrical products are excluded, such as insulated wire and cable (heading 85.44), batteries (heading 85.06), etc. This chapter is one of the most technically complex and broadest in scope in the HS, covering numerous products from household appliances to industrial electronic equipment. Heading 8543 covers electrical machines and apparatus, having individual functions, not specified or included elsewhere in this chapter. This is a 'residual' heading used to classify equipment that has independent electrical functions but is not specifically named in other headings, such as: particle accelerators, signal generators, electroplating equipment, electrolysis equipment, electrophoresis equipment, electronic cigarettes, and certain specialized electrical apparatus. Its core characteristics are 'independent function' and 'not elsewhere specified,' meaning the equipment must be capable of operating independently of other machines, and no other HS heading provides a more specific description. The first 2 digits '85' indicate Chapter 85: Electrical machinery and equipment and parts thereof. Digits 3-4 '43' indicate heading 8543: Electrical machines and apparatus, having individual functions, not specified or included elsewhere in this chapter. Digits 5-6 '90' indicate subheading 854390: Parts of the aforementioned apparatus (referring to apparatus under 8543). Therefore, 854390 specifically refers to dedicated parts of apparatus listed under heading 8543, not complete machines. For example, parts of electronic cigarettes, parts of particle accelerators, etc. Note: Subheading 854390 is a parts subheading, and its classification premise is that the parts must be solely or principally for use with apparatus under heading 8543, and are not themselves more specifically named in other headings. This commodity is classified under 854390 because it is a dedicated part of apparatus under heading 8543. If the part itself is a commodity specifically named in another heading (such as general electronic components, wires, batteries, etc.), it should be classified under the corresponding heading in priority. Only when the part is dedicated for use with 8543 apparatus and is not named in other headings should it be classified under 854390. For example, an atomizer for electronic cigarettes, as a dedicated part of electronic cigarettes, is classified under 854390; but if the atomizer is a general-purpose sprayer, it may be classified under other headings. Therefore, when classifying, it is essential to confirm the dedicated nature and non-specification elsewhere of the part.

Product Name: The Chinese and foreign language names of the declared commodity, which should accurately reflect the function, use, and material of the part. For example, 'Atomizer for electronic cigarettes,' 'Ion source for particle accelerators,' etc. Use: Explain which 8543 apparatus the part is dedicated for, such as 'dedicated for electronic cigarettes,' 'dedicated for signal generators.' Use is the key to determining dedicated nature. Brand: Fill in the brand name of the part; if no brand, write 'No Brand.' Brand helps identify the source of the commodity and possible intellectual property status. Model: Fill in the model or specification of the part, which should be consistent with the actual goods. Model is an important identifier for distinguishing different parts. Material: Main material composition, such as plastic, metal, ceramic, etc. Material affects classification, but 854390 mainly depends on dedicated nature. Working Principle: Briefly explain how the part achieves its function, such as 'atomizes e-liquid by heating resistance wire.' Helps confirm it belongs to 8543 apparatus parts. Is It a Dedicated Part: Clearly declare whether the part is dedicated for 8543 apparatus and whether it can be used for other equipment. This is the key to classification under 854390. Complete Sets of Knockdown Parts or Complete Articles: If it is a complete set of knockdown parts, note it; if it is a complete article, it may be classified under the complete machine heading. Customs declaration example: Product Name: Atomizer for electronic cigarettes Use: Dedicated for electronic cigarettes (HS 8543.70) Brand: SMOK Model: TFV12 Material: Stainless steel + glass Working Principle: Atomizes e-liquid by heating resistance wire to produce aerosol Is It a Dedicated Part: Yes, dedicated for electronic cigarettes, cannot be used for other equipment Complete Sets of Knockdown Parts: Not a complete set of knockdown parts, is a separate part Remarks: This part is dedicated for electronic cigarettes and is not named in other headings. Mistakenly classifying general-purpose parts under 854390, such as general switches, wires, etc., which should be classified under other headings. Failure to accurately declare dedicated nature, leading to customs questioning of classification, possibly requiring amendment or additional duty payment. Disassembling complete machines and declaring them as parts to evade complete machine tax rates or regulatory conditions is a violation.

Core classification determination basis: First, confirm whether the commodity is a part of electrical equipment; second, determine whether the part is dedicated for apparatus under heading 8543; third, check whether the part is more specifically named in other headings. If dedicated for 8543 apparatus and not named elsewhere, classify under 854390. If the part itself is a general-purpose item (such as standard screws, general circuit boards), classify under the corresponding heading according to material or function. In addition, consideration should be given to whether the parts constitute the essential character of a complete machine; if so, they may be classified under the complete machine heading. Classification should refer to the 'Explanatory Notes to the Harmonized Commodity Description and Coding System' and national subheading notes. 854370 Other electrical machines and apparatus having individual functions: 854370 is the complete machine subheading under 8543, while 854390 is the parts subheading. If the commodity is a complete apparatus, classify under 854370; if it is a dedicated part, classify under 854390. 854800 Electrical parts of machinery or apparatus, not specified or included elsewhere in this chapter: 854800 covers electrical parts not specified or included elsewhere in Chapter 85, while 854390 covers dedicated parts of 8543 apparatus. If the part is dedicated for 8543 apparatus, classify under 854390 in priority; if it is a general-purpose electrical part, classify under 854800. 853890 Parts for apparatus of headings 8535, 8536, 8537: 853890 is dedicated for parts of apparatus under 8535 (high-voltage switches), 8536 (low-voltage switches), and 8537 (control panels). If the part is dedicated for these apparatus, classify under 853890; if dedicated for 8543 apparatus, classify under 854390. 847990 Parts of machines of heading 8479: 8479 covers machines having individual functions, not specified or included elsewhere in this chapter, and their parts are classified under 847990. If the apparatus is electrical equipment, classify under 8543; if it is a mechanical machine, classify under 8479. Parts classification differs accordingly. 854390 Parts of the aforementioned apparatus: This code itself, but attention must be paid to distinguishing from complete machines under 854370 and from other parts subheadings. Is the part dedicated for apparatus under heading 8543? Is the part more specifically named in other headings? Does the part constitute the essential character of a complete machine? Is the part a general-purpose electrical part? Are the declaration elements for the part complete and accurate?

What is the difference between 854390 and 854370? 854370 is the complete machine subheading under heading 8543, used to classify electrical apparatus having individual functions themselves, such as electronic cigarettes, signal generators, etc. 854390 is the parts subheading, used to classify dedicated parts of these apparatus, such as atomizers for electronic cigarettes, circuit boards for signal generators, etc. If importing a complete apparatus, classify under 854370; if importing a dedicated part, classify under 854390. How to determine whether a part is dedicated for 8543 apparatus? Determination of dedicated nature requires consideration of part design, function, sales status, etc. If the part can only be used for 8543 apparatus and cannot be used for other equipment, it is considered dedicated. For example, a dedicated atomizer for electronic cigarettes can only be used for electronic cigarettes, classified under 854390; while a general USB charger can be used for multiple devices and cannot be classified under 854390. Relevant explanations or certifications should be provided at declaration. If a part under 854390 can also be used for other equipment, how should it be classified? If the part can be used for both 8543 apparatus and other equipment, it is not a dedicated part and cannot be classified under 854390. It should be classified under the corresponding heading according to the nature of the part itself, such as general circuit boards under 8534, general switches under 8536, etc. Classification should follow the General Rules for the Interpretation of the Harmonized System, selecting the most specific heading. What declaration elements are required for importing 854390 parts? Generally, product name, use, brand, model, material, working principle, whether it is a dedicated part, etc., are required. Specific requirements are subject to customs. At declaration, ensure elements are complete and accurate, especially the dedicated nature declaration, to avoid classification disputes. It is recommended to refer to the declaration element requirements for 854390 in the 'Catalogue of Specifications for Declaration of Import and Export Commodities of the People's Republic of China.' Do parts under 854390 enjoy specific tariff preferences? Tariff rates depend on the country of origin, trade agreements, and commodity classification. For example, under the China-ASEAN Free Trade Agreement, 854390 parts originating in ASEAN may enjoy agreement rates. Specific rates need to be checked in the latest 'Import and Export Tariff' or confirmed through the customs tariff query system. It is recommended to consult a customs broker or customs for accurate information. If the parts are a complete set of knockdown parts but not assembled, how should they be classified? According to General Rule 2(a), if a complete set of knockdown parts has the essential character of a complete or finished article, it should be classified under the complete machine heading. Therefore, if the complete set of knockdown parts of 8543 apparatus already has the essential character of a complete machine, it should be classified under 854370, not 854390. If the knockdown parts do not constitute the essential character of a complete machine, they should be classified separately. The status should be truthfully stated at declaration. How to distinguish between 854390 and 854800? 854800 covers electrical parts not specified or included elsewhere in Chapter 85, and is a broader residual parts subheading. 854390 applies only to dedicated parts of 8543 apparatus. If the part is dedicated for 8543 apparatus, classify under 854390 in priority; if the part is a general-purpose electrical part and is not named in other headings, classify under 854800. The key to distinction is dedicated nature. How to check the latest tariff rates and regulatory conditions for 854390? They can be checked through the official website of the General Administration of Customs of China, China International Trade Single Window, or professional tariff query tools. Enter HS code 854390 to view import tariff rates, export tariff rates, value-added tax, consumption tax, and regulatory conditions (such as whether a license is required). Tariff rates and regulatory conditions are subject to policy adjustments, and the latest official publications should prevail.