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 is one of the most technology-intensive chapters in the HS classification, covering a wide range of goods from household appliances to industrial electronic equipment. The chapter notes provide specific definitions for semiconductor devices, integrated circuits, batteries, etc., and particular attention must be paid to distinguishing function from use when classifying. Heading 8539 includes various electric filament or discharge lamps (including sealed beam lamp units and ultraviolet or infrared lamps), arc lamps, and light-emitting diode (LED) lamps. This heading covers complete lamps and bulbs, but parts that are named in other headings or that constitute the material itself must be classified under the corresponding heading. Subheadings under 8539 are further divided by lamp type and use. Code 853990 is a six-digit subheading: the first two digits 85 indicate Chapter 85 (electric motors, electrical equipment and parts thereof); digits 3-4, 39, indicate heading 8539 (electric filament or discharge lamps, etc.); digits 5-6, 90, indicate subheading 8539.90, i.e., 'parts.' Therefore, 853990 specifically refers to parts dedicated to the lamps, tubes, and similar goods listed in heading 8539, such as lamp caps, filaments, electrodes, glass envelopes, etc. If the part itself is a good more specifically named in another heading (such as plastic insulating parts), it is not classified under this code. This good is a lamp part. Since complete lamps are classified under 8539, their dedicated parts, in accordance with General Rules of Interpretation 2(a) and 6, should be classified under the parts subheading 8539.90 within the same heading as the complete article. If the part is a general-purpose material (such as a steel screw), it is classified according to the material; if it is an electrical part named in another heading (such as a lamp holder under 8536), it is classified under the corresponding heading. Therefore, 853990 applies only to parts dedicated to goods of 8539.

Product Name: The specific name of the declared good, such as 'lamp cap for LED bulb,' 'glass envelope for halogen lamp,' etc., which must be consistent with the actual item. Use: Explain what kind of lamp or tube the part is used for, such as 'for LED bulb,' 'for automotive halogen lamp.' Material: Declare the main material of the part, such as copper, aluminum, glass, ceramics, plastics, etc., which affects the classification determination. Brand: Fill in the brand name (fill in 'none' if no brand), used for customs intellectual property recordation verification. Model: Fill in the model or specification of the part to facilitate customs confirmation of the commodity attributes. Whether Dedicated Part: Declare whether the part is dedicated to lamps under 8539 rather than a general-purpose part. Processing Method: Such as 'stamping,' 'injection molding,' 'assembly,' etc., reflecting the production state of the part. Customs declaration example: Product Name: Lamp cap for LED bulb Use: For LED bulb, connects to power supply Material: Copper alloy Brand: Unbranded Model: E27-01 Whether Dedicated Part: Yes Processing Method: Stamped and formed Quantity: 10,000 pieces Remarks: This part is dedicated to LED bulbs under 8539 and complies with 853990 classification. Misdeclaring a general-purpose part (such as a standard screw) as a lamp part, which should be classified under the material heading. Misclassifying a lamp holder (8536) under 853990; a lamp holder is an independent electrical connector. Failing to distinguish LED lamp parts from traditional lamp parts; although both are classified under 853990, the declaration elements must be accurate.

The core basis for classification is the Import and Export Tariff and the General Rules of Interpretation. First confirm whether the good is a dedicated part of a lamp under 8539; if so, classify it under 8539.90 in accordance with Rule 2(a). If the part is named in another heading (such as lamp holders under 8536 or LED chips under 8541), it is classified under the corresponding heading first. At the same time, reference must be made to chapter notes and subheading notes, such as the definition of 'parts' in the notes to Chapter 85. 8539 Electric filament or discharge lamps: 8539 covers complete lamps or tubes, while 853990 covers their dedicated parts; the relationship is that of a complete article and its parts. 8536 Electrical switches, lamp holders, etc.: Electrical connectors such as lamp holders and plugs are classified under 8536; even if used for lamps, they are not classified under 853990. 8541 Semiconductor devices; LED chips: LED chips (unpackaged) are classified under 8541, while parts of packaged LED lamps are classified under 853990. 9405 Lamps and lighting fittings: 9405 covers complete lamps (such as chandeliers and desk lamps). If their parts are not named under 8539, they may be classified under 9405, but lamp parts are still classified under 853990. 7011 Glass envelopes and parts thereof: Glass bulb envelopes not fitted with electrodes are classified under 7011, but glass envelopes made specifically for lamps and assembled with filaments, etc., are classified under 853990. Is the part dedicated to lamps under 8539? Is the part more specifically named in another heading? Does the material affect classification (such as glass or ceramics)? Is it a general-purpose part rather than a dedicated part? Are the declaration elements complete and accurate?

How can it be determined whether a part should be classified under 853990? First confirm whether the part is dedicated to lamps or tubes under 8539, such as lamp caps, filaments, electrodes, etc. If the part is more specifically named in another heading (such as lamp holders under 8536), it is classified under the corresponding heading. If it is a general-purpose part (such as a screw), it is classified according to the material. Under which code should a heat sink for an LED bulb be classified? If the heat sink is dedicated to an LED bulb and is not named in another heading, it may be classified under 853990. However, if the heat sink is an aluminum profile, it may be classified under 7604 or 7616. The determination should be based on its dedication and processing state. Should a glass envelope for a bulb be classified under 853990 or 7011? Glass envelopes not fitted with electrodes or filaments are generally classified under 7011 (glass envelopes). However, if they have been made specifically for lamps and assembled with filaments, etc., they are classified under 853990. The key is whether they have the dedicated characteristics of a lamp part. What are the common errors in the declaration elements for 853990? Common errors include: generic product names, unclear use descriptions, inaccurate material declarations, omitted brand and model, and misreporting general-purpose parts as dedicated parts. It is recommended to check item by item against the customs declaration filling specifications. How can the import tariff rate for 853990 be checked? It can be checked through the official website of the General Administration of Customs, the China International Trade Single Window, or the Import and Export Tariff. Tariff rates change with policy adjustments, so the latest version should be used. Attention may also be paid to free trade agreement rates. Are parts for automotive lamps classified under 853990? If automotive lamps are classified under 8539, their dedicated parts are also classified under 853990. However, automotive lighting fixtures (such as headlamp assemblies) are classified under 8512 or 9405, and their parts must be classified under the corresponding heading. A distinction must be made between lamps and lighting fixtures. How can 853990 be distinguished from LED chips under 8541? 8541 includes unpackaged LED chips (semiconductor devices), while 853990 includes LED components that have been packaged or assembled into lamp parts. If an LED chip has been packaged and is dedicated to a lamp, it is classified under 853990. What regulatory conditions are required for exporting 853990? Generally, no special regulation is required for export, but customs declaration specifications must be met. If intellectual property is involved, an authorization letter must be provided. For details, consult the Customs Import and Export Tariff and regulatory condition codes.