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 has an extremely broad scope, covering everything from power generation, transformation, and utilization equipment to electronic components and household appliances. The core characteristic is that goods must rely on electrical energy to perform their functions, or be dedicated parts of electrical equipment. Incandescent light bulbs, as electric light source products that convert electrical energy into light energy, are typical electrical equipment and therefore classified in this chapter. Heading 8539 includes various electric light source products, such as incandescent light bulbs, discharge lamps (including cold cathode and hot cathode fluorescent lamps), arc lamps, light-emitting diode (LED) bulbs and lamps. This heading covers not only the bulbs themselves but also tubes, bulb semi-finished products, and parts. However, luminaires (lighting fixtures) are classified in headings after 8539, such as 9405. This heading focuses on 'light sources' rather than 'lighting fixtures,' so incandescent light bulbs as independent light source products are classified under this heading. Code 853979 is a six-digit subheading. The first 2 digits '85' represent Chapter 85 (electrical machinery and equipment and parts thereof). Digits 3-4 '39' represent heading 8539 (various electric light sources and parts). Digits 5-6 '79' represent subheading 8539.79, namely 'other incandescent light bulbs.' In HS classification, under 8539, products are first divided by light source type into incandescent lamps, discharge lamps, LED lamps, etc., and the incandescent lamp subheadings are further subdivided by power, use, etc. 8539.79 is a residual subheading covering other incandescent light bulbs not elsewhere specified, such as special-purpose or non-standard specification incandescent light bulbs. This commodity is an incandescent light bulb, which uses electric current to heat a filament to incandescence to emit light, belonging to electric light sources. It is not classified under more specific subheadings such as 8539.10 (sealed beam lamp units) or 8539.21 (tungsten halogen lamps), nor is it an LED or discharge lamp, so it is classified under 8539.79 'other incandescent light bulbs.' The difference from 8539.90 (parts) is that this code refers to complete bulbs, not parts such as filaments or bases.

Product Name: The specific name of the declared commodity, such as 'incandescent light bulb,' which should accurately reflect the product's attributes. Brand: Fill in the brand or manufacturer name of the bulb; if no brand, fill in 'no brand.' Model: Fill in the specification and model of the bulb, such as 'A19 40W 120V.' Power: Declare the rated power of the bulb, in watts (W). Voltage: Declare the rated voltage of the bulb, in volts (V). Use: Explain the main use of the bulb, such as 'household lighting' or 'instrument indication.' Base Type: Fill in the base specification, such as E27, E14, B22, etc. Contains Mercury: Incandescent light bulbs typically do not contain mercury, but it must be explicitly declared as 'does not contain mercury.' Product Name: Incandescent Light Bulb; Brand: Philips; Model: A19 40W 120V; Power: 40W; Voltage: 120V; Use: Household Lighting; Base Type: E26; Contains Mercury: No. Mistakenly classifying tungsten halogen lamps under 8539.79; tungsten halogen lamps should be classified under 8539.21. Neglecting to declare 'contains mercury,' leading to conflicts with environmental regulations. Incorrect power unit, such as filling in 40W as 0.04kW.

The core basis for classification is the light-emitting principle and structure of the bulb. Incandescent light bulbs emit light by heating a filament with electric current, belonging to thermal radiation light sources. In HS classification, first determine whether it is an electric light source (8539), then subdivide by light source type (incandescent, discharge, LED, etc.). Under the incandescent lamp subheading, further division is based on whether it is tungsten halogen, power rating, use, etc. 8539.79 is for other incandescent light bulbs, applicable to incandescent light bulbs not elsewhere specified, such as general lighting bulbs, decorative bulbs, etc. 853921 Tungsten Halogen Lamps: Tungsten halogen lamps are a type of incandescent lamp, but because they are filled with halogen gas, they are preferentially classified under 8539.21 rather than 8539.79. 853931 Fluorescent Lamps: Fluorescent lamps are discharge lamps with a different light-emitting principle, classified under 8539.31, and cannot be classified as incandescent lamps. 853950 LED Bulbs: LED bulbs use semiconductor light emission, classified under 8539.50, fundamentally different from incandescent lamps. 853990 Bulb Parts: 8539.90 is for bulb parts, such as filaments and bases, while 8539.79 is for complete bulbs. Confirm whether the light-emitting principle is incandescence. Confirm whether it contains halogen gas (if so, classify under 8539.21). Confirm whether it is a complete bulb rather than a part. Confirm whether it is for special applications (such as spotlights). Confirm whether it contains mercury (incandescent lamps typically do not).

How to determine whether a light bulb should be classified under 8539.79? First confirm that the bulb is an incandescent lamp (filament emits light when energized), and is not a tungsten halogen lamp (does not contain halogen gas), nor another specific subheading (such as sealed beam lamp units). If it meets these criteria, classify under 8539.79. What is the difference in HS classification between incandescent light bulbs and tungsten halogen lamps? Tungsten halogen lamps are a type of incandescent lamp, but because they are filled with halogen gas, the HS separately lists them under 8539.21. Ordinary incandescent lamps, if not halogenated, are classified under 8539.79. What declaration elements must be provided when declaring incandescent light bulbs? Product name, brand, model, power, voltage, use, base type, and whether they contain mercury must be provided. Among these, power and voltage are key to distinguishing different subheadings. How to distinguish between 8539.79 and 8539.90? 8539.79 refers to complete incandescent light bulbs, while 8539.90 refers to parts of bulbs, such as filaments, bases, and glass envelopes. If imported as knocked-down parts but already constituting the characteristics of a complete bulb, they may still be classified under 8539.79. Is the HS code for incandescent light bulbs affected by power? Under subheading 8539.79, power does not affect classification, but power is one of the declaration elements. Bulbs of certain specific power ratings may be classified under other subheadings, such as 8539.10 (sealed beam lamp units), which may involve power restrictions. How to find the accurate HS code for selling incandescent light bulbs via cross-border e-commerce? You can use the official website of the General Administration of Customs, HS code query tools, or consult a professional customs broker. Enter the keyword 'incandescent bulb' and combine with product parameters to determine the code. Do incandescent light bulbs require commodity inspection for export? Incandescent light bulbs are generally not subject to statutory commodity inspection, but they must comply with the importing country's technical standards (such as energy efficiency and safety). For specifics, check customs regulatory conditions or consult the local customs. If an incandescent light bulb is used for special equipment, will the classification change? If the bulb is dedicated to specific equipment and cannot be used independently, it may be classified as a part of the equipment. However, if it can be used independently, it is still classified under 8539.79. Judgment should be based on actual use and function.