Chapter 85 is the major category of electromechanical products in the HS classification system, covering electrical equipment and electronic components such as electric motors, generators, transformers, batteries, resistors, capacitors, and integrated circuits. This chapter has an extremely broad scope, ranging from household appliances to precision electronic components, but excludes specific goods already classified under other chapters (such as mechanical apparatus of Chapter 84). Within the chapter, headings are further divided by function, use, and material, making it one of the most core chapters for classifying electromechanical products in international trade. Heading 8533 covers resistors (including rheostats) and potentiometers, but excludes heating resistors (heading 8516) and photosensitive resistors (heading 8541). Under this heading, goods are further subdivided by resistor type (fixed/variable), material (metal film, carbon film, wirewound, etc.), and power rating. Fixed resistors are one of the most fundamental passive components in electronic circuits, used for current limiting, voltage division, biasing, etc., and their classification requires attention to material, power rating, and whether they are variable. Code 853321 is a six-digit subheading: the first 2 digits "85" represent Chapter 85 (electrical machinery, equipment and parts thereof); digits 3-4 "33" represent heading 8533 (resistors, other than heating resistors); digits 5-6 "21" represent subheading 853321, namely fixed metal film resistors with a power rating not exceeding 20 watts. Among these, "2" indicates fixed resistors (non-variable), and "1" further limits it to the metal film type. This subheading only covers fixed resistors made of metal film material with a power rating ≤20W; those exceeding 20W or made of non-metal film materials must be classified under other subheadings. This product is a fixed metal film resistor with a power rating ≤20W, which conforms to the description of subheading 853321. If the power rating is >20W, it should be classified under 853329 (other fixed resistors); if it is a variable resistor, it should be classified under 853340; if it is a carbon film or wirewound fixed resistor, it should be classified under 853310 or a subheading other than 853321. Therefore, material (metal film), fixed nature, and power rating are the key determining factors.

Product Name: The specific name of the declared product, which should include key information such as material, type, and power rating, e.g., "fixed metal film resistor." Brand: Fill in the brand or manufacturer name of the resistor; if there is no brand, fill in "no brand." Model: Fill in the specific model or specification code of the product to distinguish different series. Power Rating: Declare the rated power of the resistor in watts (W), and it must be clearly stated whether it is ≤20W. Material: Specify the resistive body material of the resistor, such as metal film, carbon film, wirewound, etc. Variable or Not: Declare whether the resistor is fixed or variable; for fixed type, fill in "fixed." Use: Briefly describe the application field of the resistor, such as use in circuit current limiting, voltage division, etc. Customs declaration example: Product Name: Fixed metal film resistor Brand: YAGEO Model: MF0207FTE52-100R Power Rating: 0.25W Material: Metal film Variable or Not: Fixed Use: For circuit current limiting Specification: 100Ω ±1% Packaging: 5000 pcs/reel Remarks: Power rating less than 20W, conforms to HS code 853321. Inaccurate power rating declaration: actual power rating >20W but incorrectly reported as ≤20W, resulting in an error under subheading 853321; it should be classified under 853329. Material confusion: incorrectly reporting a metal film resistor as carbon film or wirewound, affecting subheading determination. Variable nature misreporting: declaring a variable resistor (potentiometer) as a fixed resistor; it should be classified under 853340.

The core basis for classification is the Import and Export Tariff and HS Explanatory Notes. Subheading 853321 requires simultaneous satisfaction of: fixed type, metal film material, and power rating ≤20W. Power rating refers to the maximum power that the resistor is allowed to dissipate during long-term continuous operation at the rated ambient temperature, usually expressed in watts. If the power rating exceeds 20W, even if it is a metal film fixed resistor, it is classified under 853329. If it is a variable resistor, it is classified under 853340. In addition, attention should be paid to whether the resistor is a heating resistor (classified under 8516) or a photosensitive resistor (classified under 8541). 853329 Other fixed resistors: Covers fixed resistors with a power rating >20W, as well as fixed resistors made of non-metal film materials (such as carbon film and wirewound). The difference from 853321 lies in power rating or material. 853340 Variable resistors (including potentiometers): 853340 covers variable resistors, whereas 853321 is limited to fixed resistors. If the resistance value is adjustable, even if the material is metal film, it should be classified under 853340. 853310 Fixed carbon film resistors: 853310 specifically refers to fixed carbon film resistors, which differ from the metal film material of 853321. If the material is carbon film, it should be classified under 853310. 851680 Heating resistors: 851680 covers resistors used for heating, such as heating wires. If the main function of the resistor is heat generation, it should be classified under 8516, not 8533. 854110 Diodes: Diodes are semiconductor devices with unidirectional conductivity, differing from the linear characteristics of resistors, and are classified under 8541. Confirm that the resistor is fixed, not variable. Confirm that the resistive body material is metal film. Confirm that the rated power is ≤20W. Confirm that it is not for heating use and does not belong to 8516. Confirm that it is not a photosensitive or other semiconductor device.

How can I check the tax rate for HS code 853321? It can be checked through the official website of the General Administration of Customs of China, the International Trade Single Window, or the Import and Export Tariff. Tax rates vary by country, trade agreement, and annual adjustments, so the latest official data should be used as the basis. You may also consult a professional customs broker or use the customs classification advance ruling service. Which code should a metal film resistor with a power rating of exactly 20W be classified under? Subheading 853321 requires a power rating of ≤20W, so 20W meets the condition and should be classified under 853321. If the power rating is 20.1W or higher, it is classified under 853329. When declaring, the rated power value must be provided accurately to avoid classification errors caused by rounding. What is the difference in classification between metal film resistors and carbon film resistors? Metal film resistors (fixed, ≤20W) are classified under 853321, while carbon film resistors (fixed) are classified under 853310. The different materials lead to different subheadings. When declaring, the material must be clearly specified and not confused. If a carbon film resistor has a power rating >20W, it is classified under 853329. If a resistor is used in heating equipment, can it still be classified under 853321? No. If the main function of the resistor is heat generation (such as a heating wire or heating element), it should be classified under heading 8516, with the specific subheading determined by power rating and use. 853321 applies only to fixed metal film resistors used in circuits for non-heating purposes such as current limiting and voltage division. How should the declaration element "power rating" be filled in during customs declaration? The rated power of the resistor should be filled in, in watts (W), such as "0.25W." If it is a multi-power series, each should be declared separately. Vague expressions such as "less than 20W" cannot be used; a specific value must be provided so that customs can determine whether it is classified under 853321. Which code should a variable metal film resistor be classified under? Variable resistors (including potentiometers), regardless of material, are classified under 853340. Therefore, a variable metal film resistor is not classified under 853321 but should be classified under 853340. When declaring, the "variable" attribute must be clearly stated to avoid mistakenly classifying it under a fixed resistor subheading. Can imported used resistors be classified under 853321? HS code classification does not change based on new or used condition. If a used resistor meets the conditions of fixed metal film and power rating ≤20W, it is still classified under 853321. However, importing used mechanical and electrical products may involve additional regulatory requirements, and relevant procedures should be consulted with customs in advance. What is the main difference between 853321 and 853329? Both are fixed resistors, and the difference lies in: 853321 specifically refers to metal film material with a power rating ≤20W; 853329 covers other fixed resistors, including metal film resistors with a power rating >20W, as well as non-metal film fixed resistors such as carbon film and wirewound. When classifying, both material and power rating must be considered.