Chapter 84 covers nuclear reactors, boilers, machinery, mechanical appliances and their parts, and is one of the largest chapters in the HS classification, involving power machinery, pumps, fans, refrigeration equipment, office machinery, automatic data processing equipment, transmission devices, etc. Goods in this chapter are mostly industrial manufactured products with mechanical or electrical functions, but electrical equipment of Chapter 85 is excluded. The chapter notes clarify priority classification rules, for example, machine parts are generally classified under the heading of the complete machine to which they belong, unless the parts themselves constitute a complete article of another heading. Heading 8473 is specifically used to classify parts and accessories of the machines listed in headings 8469 to 8472, including typewriters, word-processing machines, calculators, accounting machines, postage-franking machines, ticket-issuing machines and similar office machines. Parts under this heading must be solely or principally for use with the above-mentioned machines, rather than general-purpose parts. If a part can also be used with other machines, it must be determined according to the General Rules for the Interpretation of the Harmonized System. Code 847329 consists of 6 digits: the first 2 digits 84 represent Chapter 84 (machinery, mechanical appliances and parts thereof); digits 3-4, 73, represent heading 8473 (parts and accessories solely or principally for use with machines of headings 8469-8472); digits 5-6, 29, represent subheading 8473.29, namely "other parts of calculators". Note that under heading 8473 there are also subheadings such as 8473.10 (parts of typewriters and word-processing machines), 8473.21 (parts of electronic calculators), 8473.29 (other parts of calculators), and 8473.30 (parts of automatic data processing equipment). Therefore, 8473.29 specifically refers to parts of calculators other than electronic calculators (such as mechanical calculators, accounting machines, etc.). The goods are calculator parts, but they are not parts of electronic calculators (classified under 8473.21), nor parts of typewriters or automatic data processing equipment, and are therefore classified under 8473.29 "other parts of calculators". If the part is a general-purpose part (such as screws or springs), it should be classified according to its material (such as 7318 or 7320). Only parts solely or principally for use with calculators are classified under this code.

Product name: The specific name of the declared goods, which should accurately reflect the function or use of the part, such as "calculator housing", "calculator key", etc. Use: Explain for which type of calculator the part is solely or principally used, such as "for electronic calculators", "for mechanical calculators", etc. Material: The main material of the declared part, such as plastic, metal, rubber, etc., which affects the classification determination. Brand: Fill in the brand or manufacturer name of the part; if there is no brand, fill in "unbranded". Model: Fill in the model or specification of the part to facilitate customs identification. Is it dedicated: Declare whether the part is dedicated for use with calculators or is a general-purpose part. Working principle: For active parts, briefly explain their working principle, such as "transmitting key signals through a circuit". Product name: calculator key; Use: for electronic calculators; Material: ABS plastic; Brand: unbranded; Model: BT-100; Is it dedicated: dedicated; Working principle: after pressing, conductive rubber contacts the circuit board to input signals. Mistakenly classifying electronic calculator parts under 8473.29, when they should actually be classified under 8473.21. Declaring general-purpose parts (such as screws) as calculator-specific parts, when they should be classified according to material. Failure to provide sufficient information to determine whether the part is dedicated, leading to classification disputes.

The core criteria for classification are: 1) whether the part is solely or principally for use with the machines of 8469-8472; 2) whether the part belongs to parts of electronic calculators (8473.21) or other parts of calculators (8473.29); 3) whether the part constitutes a general-purpose part. Only when it is both dedicated for use with calculators and not a part of electronic calculators should it be classified under 8473.29. 847321 Parts of electronic calculators: 8473.21 specifically refers to parts of electronic calculators (such as solar calculators and portable electronic calculators), while 8473.29 covers parts of other calculators (such as mechanical calculators and accounting machines). 847330 Parts of automatic data processing equipment: 8473.30 applies to parts of automatic data processing equipment (such as computers). If a part can be used for both calculators and computers, it must be classified according to its principal use. 847310 Parts of typewriters and word-processing machines: 8473.10 applies to parts of typewriters or word-processing machines, which have different functions from calculator parts. 392690 Other articles of plastics: If a plastic part is a general-purpose item and is not dedicated for use with calculators, it should be classified under 3926.90. 732690 Other articles of iron or steel: If an iron or steel part is a general-purpose item and is not dedicated for use with calculators, it should be classified under 7326.90. Is the part dedicated for use with calculators? Is the calculator an electronic calculator? Is the part a general-purpose part? Have subheadings such as 8473.21 and 8473.30 been excluded? Are the declaration elements complete and accurate?

How can it be determined whether a part is dedicated for use with calculators? Dedicated for use with calculators means that the part is designed and functions only for use with calculators and cannot be used with other machines. For example, calculator-specific keys, housings, LCD screens, etc. If the part is general-purpose (such as screws or springs), it is not a dedicated part and should be classified according to material. How are parts of electronic calculators distinguished from other calculator parts? Parts of electronic calculators are classified under 8473.21, while other calculator parts (such as those of mechanical calculators and accounting machines) are classified under 8473.29. The key distinction lies in the type of calculator: electronic calculators generally use electronic circuits, while mechanical calculators use mechanical structures. If a part can be used for both calculators and computers, how should it be classified? According to the General Rules for the Interpretation of the Harmonized System, it should be classified according to its principal use. If the principal use cannot be determined, reference should be made to customs classification decisions or advance classification rulings. Generally, if the part is principally for use with computers, it is classified under 8473.30; if it is principally for use with calculators, it is classified under 8473.21 or 8473.29. Under which code should a calculator housing be classified? If the housing is dedicated for use with electronic calculators, it is classified under 8473.21; if it is dedicated for use with other calculators, it is classified under 8473.29. If the housing is a general-purpose plastic housing, it is classified under 3926.90. How can classification errors be avoided during declaration? The product name, use, material, dedication and other information of the part should be described in detail, and reference should be made to the "Import and Export Tariff Commodity and Heading Notes" and customs classification decisions. If necessary, advance classification may be applied for. How can the import tax rate for 8473.29 be checked? Tax rates may change. It is recommended to check the latest tax rate through the official website of the General Administration of Customs, the China International Trade Single Window, or by consulting a customs broker. Different countries of origin may apply different tax rates. What regulatory conditions are required for importing calculator parts? Usually no special regulatory conditions are required, but customs declaration requirements must be met. If radio transmitting equipment, etc. is involved, relevant certification may be required. For details, consult the "Customs Regulatory Conditions Table". If a part is dedicated for use with calculators but is made of precious metal, how should it be classified? If the precious metal part constitutes the essential character of the complete article, it may be classified as an article of precious metal (such as 7115). Otherwise, it is still classified as a calculator part. This must be determined according to the General Rules for the Interpretation of the Harmonized System.