Chapter 85 covers electric motors, electrical equipment and parts thereof; sound recorders and reproducers, television image and sound recorders and reproducers, and parts and accessories thereof. This chapter has an extremely broad scope, covering everything from power generation, transformation, and consumption equipment to communications and electronic components. The core characteristic is that goods must rely on electrical energy to operate or be electrical devices themselves. The chapter notes strictly distinguish the boundary with Chapter 84 (mechanical appliances); goods with independent electrical functions are preferentially classified in this chapter. Heading 8533 covers resistors (including rheostats and potentiometers), other than heating resistors (classified in 8516 or 8545, etc.). Specifically, it includes fixed resistors, variable resistors, and potentiometers, regardless of their material of manufacture (carbon film, metal film, wirewound, etc.). However, note that if resistors are combined with other components into modules or assemblies, they may be classified in 8542 or 8543, etc. Under this heading, they are further subdivided by type, rated power, etc. First 2 digits 85: indicates Chapter 85, i.e., electric motors, electrical equipment and parts thereof. Digits 3-4, 33: indicates heading 8533, i.e., resistors (including rheostats and potentiometers), other than heating resistors. Digits 5-6, 10: indicates subheading 853310, i.e., fixed carbon film resistors. This subheading specifically refers to resistors that use carbon film as the resistive material and have a fixed resistance value. Carbon film resistors are typically made by depositing a carbon film on a ceramic substrate and cutting grooves to adjust the resistance value, and are a type of fixed resistor. This commodity is a fixed carbon film resistor, whose core function is to limit current and divide voltage, making it a typical resistor. Since it uses carbon film as the resistive body and has a fixed resistance value, it conforms to the description of subheading 853310. It is not classified in 853321 (fixed resistors with rated power ≤20W) because 853321 covers other fixed resistors, and carbon film resistors already have a specific listing; nor is it classified in 853340 (variable resistors), because its resistance value is not adjustable.

Product Name: The specific name of the declared commodity, which should include core information such as material, type, and use, e.g., 'fixed carbon film resistor'. Brand: Fill in the manufacturer or brand name; if there is no brand, indicate 'no brand'. Model: Fill in the product's model or specification code, used to distinguish different parameters. Rated Power: Indicate the resistor's rated power, usually in watts (W), such as 1/4W, 1/2W, etc. Resistance Value: Fill in the nominal resistance value and tolerance, such as 10kΩ±5%. Use: Explain in what equipment or circuit the resistor is used, such as 'used in control boards of household appliances'. Material: Specify that the resistive body material is carbon film, as well as the materials of the substrate, leads, etc. Product Name: Fixed Carbon Film Resistor; Brand: YAGEO; Model: CFR-25JB-52-10K; Rated Power: 1/4W; Resistance Value: 10kΩ±5%; Use: Used for current limiting in power adapter circuits; Material: carbon film, ceramic substrate, tin-plated copper leads. Mistakenly classifying carbon film resistors under 853321 (other fixed resistors), ignoring the specific listing for carbon film. Failing to distinguish between fixed and variable resistors, and mistakenly declaring potentiometers as fixed carbon film resistors. Ignoring the declaration of rated power, making it impossible to determine whether it falls within the scope of subheading 853321.

The core basis for classification is the subheading texts of the Import and Export Tariff and the Explanatory Notes. 853310 explicitly lists 'fixed carbon film resistors', so as long as the commodity has a fixed resistance value and the resistive body is carbon film, it should be classified under this code. Note: if the resistor is for heating purposes, it is classified under 8516; if it is a variable resistor, it is classified under 853340; if it is another fixed resistor (such as metal film or wirewound), it is classified under 853321 to 853329. In addition, if the resistor is combined with other components into a circuit module, it may be classified under 8542 or 8543. 853321 Other fixed resistors, rated power ≤20W: 853321 covers fixed resistors other than carbon film, such as metal film and metal oxide film. Carbon film resistors have a specific listing and are not classified under this subheading. 853329 Other fixed resistors, rated power >20W: Applies to high-power fixed resistors that are not carbon film material. Carbon film resistors are usually low power, but even if the power is greater than 20W, they should still be classified under 853310. 853340 Variable resistors and potentiometers: 853340 includes resistors with adjustable resistance values, such as potentiometers and rheostats. Fixed carbon film resistors have non-adjustable resistance values, so they are classified under 853310. 854590 Other articles of carbon: 854590 covers carbon electrodes, carbon brushes, etc., but resistors, as electrical components, already have a specific listing under 8533 and are not classified under 8545. 851680 Heating resistors: 851680 specifically refers to resistors used for heating, such as heating wires. Fixed carbon film resistors are used for current limiting and voltage division in circuits, not for heating, so they are classified under 8533. Is it a fixed resistance value? Is the resistive body carbon film? Is it used for non-heating purposes such as current limiting and voltage division in circuits? Has it not been combined with other components into a module? Has the rated power been declared?

How do I look up the HS code for fixed carbon film resistors? First confirm that the commodity has a fixed resistance value, is made of carbon film, and is not for heating purposes. Then consult Chapter 85 of the Import and Export Tariff, find heading 8533, and select 853310 according to the subheading text. You may also use customs advance classification rulings or consult a professional customs broker. What is the difference in classification between carbon film resistors and metal film resistors? Carbon film resistors are classified under 853310, while metal film resistors are classified under 853321 (if power ≤20W) or 853329 (if power >20W). The core difference lies in the resistive body material, and the material must be specified when declaring. How do you distinguish fixed carbon film resistors from variable resistors? Fixed resistors have non-adjustable resistance values, while variable resistors have adjustable resistance values. Fixed carbon film resistors are classified under 853310, and variable resistors under 853340. When declaring, note whether the product has an adjustment knob or sliding contact. Does rated power affect classification? For carbon film resistors, rated power does not affect classification; they are all classified under 853310. However, for other fixed resistors, rated power ≤20W is classified under 853321, and >20W under 853329. Therefore, power information is still required when declaring. If a carbon film resistor is used in heating equipment, is it still classified under 853310? If the resistor's main function is to generate heat, it is a heating resistor and should be classified under 851680. But if it is only part of a circuit, used for current limiting and voltage division, then even if the equipment is heating equipment, the resistor itself is still classified under 853310. What declaration elements are required for importing carbon film resistors? Usually, product name, brand, model, rated power, resistance value, use, and material are required. Specific requirements are subject to customs; it is recommended to refer to the Customs Import and Export Commodity Specification Declaration Catalog of the People's Republic of China. Does a carbon film resistor having multiple pins affect classification? The number of pins does not affect classification; as long as it is essentially a fixed carbon film resistor, it is classified under 853310. However, if it integrates other components (such as capacitors or diodes), it may be classified under 8542 or 8543. How do you determine whether a carbon film resistor is 'fixed'? The resistance value of a fixed resistor is determined after manufacture and cannot be adjusted by the user. If the product has an adjustable structure (such as a sliding arm), it is a variable resistor. In appearance, fixed resistors are usually cylindrical with leads and have no movable parts.