Chapter 40 covers natural rubber, synthetic rubber, vulcanized rubber and articles thereof, including latex, rubber in primary forms, semi-finished products (such as plates, sheets, strip, rods, profiles) and various rubber articles. This chapter does not include hard rubber (heading 40.17) or composite products of rubber and textile materials, etc. (classified according to the predominant material). The core distinctions lie in the form of the rubber, whether it is vulcanized, and whether it is mixed with other materials. Heading 4008 covers plates, sheets, strip, rods, profiles of vulcanized rubber (other than hard rubber), and articles of non-cellular rubber. Specifically it covers: plates, sheets, strip of non-cellular vulcanized rubber (subheadings 4008.11-4008.19), rods, profiles of non-cellular vulcanized rubber (subheadings 4008.21-4008.29), plates, sheets, strip of cellular vulcanized rubber (subheading 4008.30) and rods, profiles of cellular vulcanized rubber (subheading 4008.40). This heading does not include rubber thread and cord (heading 40.09), rubber tubing (heading 40.09) or articles of hard rubber. First 2 digits 40: represents Chapter 40 'Rubber and articles thereof'. Digits 3-4, 08: represents heading 4008 'Plates, sheets, strip, rods and profiles of vulcanized rubber (other than hard rubber)'. Digits 5-6, 29: represents subheading 4008.29 'Other rods and profiles of non-cellular vulcanized rubber'. Among these, subheading 4008.21 is 'Profiles of non-cellular vulcanized rubber, unvulcanized or pre-vulcanized', and 4008.29 is 'Other rods and profiles of non-cellular vulcanized rubber', generally referring to rods, bars and profiles that are vulcanized and non-cellular. Code 400829 as a whole means: rods and profiles of non-cellular vulcanized rubber, not further worked or only surface-worked. The goods are rods and profiles of non-cellular vulcanized rubber, falling under heading 4008. They are not classified under 4009 (rubber tubing) because they are not hollow tubular; not under 4016 (other articles of rubber) because they are semi-finished shapes such as rods and profiles rather than specific articles; not under 4007 (thread and cord of unvulcanized rubber) because they are vulcanized and in rod form rather than thread or cord. Therefore classification under 4008.29 is most appropriate.

Product name: The specific name of the declared goods, such as 'vulcanized rubber sealing strip', 'non-cellular rubber profile', etc. Material: State the type of rubber, such as natural rubber, styrene-butadiene rubber, silicone rubber, etc., and whether it is vulcanized and whether it is cellular. Appearance and shape: Describe the cross-sectional shape (such as rectangular, circular, irregular) and dimensions (length, width, thickness or diameter). Use: State the main use, such as sealing, cushioning, decoration, etc. Brand: Declare the brand name (if any); if no brand, fill in 'none'. Model: Declare the product model or specification code. Processing technique: State whether further processing has been carried out (such as cutting, drilling, surface treatment, etc.). Product name: vulcanized rubber sealing strip; Material: ethylene-propylene-diene rubber (EPDM), non-cellular, vulcanized; Appearance and shape: rectangular cross-section, length 2000mm, width 10mm, thickness 5mm; Use: for automobile door and window sealing; Brand: none; Model: EPDM-10x5; Processing technique: extruded and then vulcanized, not further worked. Misclassifying vulcanized rubber rods under 4009 (rubber tubing) due to failure to note whether they are hollow tubular. Ignoring the difference between 'non-cellular' and 'cellular', leading to incorrect subheading. Failing to provide cross-sectional dimensions, making it impossible to distinguish rods from profiles, which may affect classification.

Core basis for classification: 1) The material is vulcanized rubber, and non-hard, non-cellular; 2) The shape is rod or profile (generally referring to solid products with a uniform cross-section throughout the length); 3) Not further worked (mere cutting, surface treatment, etc. do not affect classification). If hollow tubular, it should be classified under 4009; if plates, sheets, strip, under 4008.11-4008.19; if cellular, under 4008.30 or 4008.40; if other specific articles, under 4016. 4009 Vulcanized rubber tubing: 4009 is hollow tubular, used for conveying fluids or gases; 4008.29 is solid rods or profiles, with a non-hollow cross-section. 4016 Other articles of vulcanized rubber: 4016 covers articles of specific shapes (such as gaskets, sealing rings, etc.), whereas 4008.29 covers semi-finished rods and profiles, which usually require further processing into articles. 4008.11 Plates, sheets and strip of non-cellular vulcanized rubber: 4008.11 covers plates, sheets and strip (usually width greater than thickness, in rolls or sheets), whereas 4008.29 covers rods and profiles (uniform cross-section, any length). 4008.21 Profiles of non-cellular vulcanized rubber, unvulcanized or pre-vulcanized: 4008.21 covers unvulcanized or pre-vulcanized profiles, while 4008.29 covers vulcanized profiles. Is it vulcanized rubber? Is it non-cellular? Is it a solid rod or profile? Has it not been further worked? Is the cross-section uniform?

How can I check the tax rate for HS code 400829? You can check the import tax rate, export tax rate and regulatory conditions by entering code 400829 on the official website of the General Administration of Customs, the China International Trade Single Window, or third-party query platforms. Note that tax rates are subject to policy adjustments, and the latest published rates should prevail. How do you distinguish between vulcanized rubber rods and rubber tubing? Rubber tubing is hollow tubular, used for conveying media; rubber rods are solid with a uniform cross-section, usually used for sealing and support. If the product has an internal bore and is used for conveying, it should be classified under 4009; if it is a solid rod, under 4008.29. What is the difference in classification between non-cellular and cellular rubber? Non-cellular rubber is classified under 4008.11-4008.29, and cellular rubber under 4008.30-4008.40. Cellular rubber has low density and contains pores, while non-cellular rubber is dense. When declaring, it is necessary to specify whether it is cellular. What is the difference between 400829 and 401693? 400829 covers semi-finished rods and profiles that require further processing; 401693 covers specific articles such as sealing gaskets, washers, etc. If the product has been made into a sealing element of specific shape, it should be classified under 4016. What information is required to declare 400829? It is necessary to provide the product name, material, appearance and shape, dimensions, use, brand, model, processing technique, etc. It is recommended to attach product pictures, cross-sectional drawings and material certificates so that customs can classify accurately. If a rubber rod has been cut but not further worked, is it still classified under 400829? Yes, merely cutting to a specific length does not affect classification, and it still remains a rod or profile. However, if it has been further worked by drilling, assembly, etc., it may be classified under 4016. What are the export regulatory conditions for 400829? Usually there are no special regulatory conditions, but it must meet import and export commodity inspection requirements. For details, you can check the regulatory condition codes issued by the General Administration of Customs; if there is no code, it is general trade. How can you determine whether a rubber profile is 'non-cellular'? You can observe whether the cross-section has uniform pores, or test the density. Non-cellular rubber is dense and free of pores; cellular rubber has an open-cell or closed-cell structure. If necessary, a test report can be provided.