Chapter 68 covers articles of stone, plaster, cement, asbestos, mica or similar materials, including articles of mineral wool, refractory articles, etc. The main raw materials of goods in this chapter are non-metallic minerals, processed and shaped, but excluding ceramic articles (Chapter 69) and glass articles (Chapter 70). Headings within the chapter are divided by material type and use, with 6815 covering non-metallic mineral articles not elsewhere specified or included. Heading 6815 covers non-metallic mineral articles not specified or included in other headings, such as articles of mineral wool, expanded vermiculite, expanded clay, foamed mineral materials, etc., as well as mixed articles containing these materials. However, it excludes refractory articles, building panels, insulating materials, etc. already classified under other headings. This heading is a residual heading applicable to a variety of non-metallic mineral articles. Code 681599 is a 6-digit subheading. The first 2 digits '68' represent Chapter 68 (articles of stone, plaster, cement, asbestos, mica or similar materials). The 3rd-4th digits '15' represent heading 6815 (other articles of non-metallic minerals). The 5th-6th digits '99' represent subheading 681599, i.e., 'other', indicating non-metallic mineral articles not specifically named under heading 6815. Therefore, 681599 is a residual subheading applicable to non-metallic mineral articles not classified under other subheadings of 6815. This product is classified under 681599 because it is a non-metallic mineral article and is not specifically named under other subheadings of 6815 (such as 681510, 681520, etc.). Differences from adjacent codes: other subheadings of 6815 may target specific materials or uses; Chapter 69 covers ceramic articles, and Chapter 70 covers glass articles, both of which are made of different materials from this product. Therefore, 681599 is the correct residual classification.

Product Name: The specific name of the declared commodity, which should accurately reflect the material and use of the commodity, such as 'mineral wool board', 'expanded vermiculite article', etc. Material: State the main components of the commodity, such as mineral wool, expanded vermiculite, expanded clay, foamed mineral materials, etc., and indicate the content or proportion. Use: Describe the main use of the commodity, such as building insulation, fireproofing, soundproofing, filtration, etc., which helps with classification. Appearance: Describe the shape and state of the commodity, such as board, sheet, roll, block, granule, etc. Specifications and Dimensions: Declare the dimensions of the commodity, such as length, width, thickness, diameter, etc., usually in millimeters or centimeters. Brand: If there is a brand, declare the brand name; if there is no brand, declare 'no brand'. Model: Declare the model or item number of the commodity for easy identification. Processing Method: Explain the processing technique of the commodity, such as forming, sintering, melting, etc. Product Name: Mineral wool insulation board; Material: Mineral wool (aluminum silicate fiber) 95%, binder 5%; Use: Industrial equipment insulation; Appearance: Rectangular board; Specifications and Dimensions: 1000mm×500mm×50mm; Brand: No brand; Model: GW-50; Processing Method: Melt-blown forming. Mistakenly classifying mineral wool articles under other subheadings of 6815, such as 681510 (non-electrical articles of graphite or other carbon), etc. Failure to distinguish ceramic articles from mineral articles; ceramic articles should be classified under Chapter 69. Ignoring the processing method; if it has undergone ceramic processes such as sintering, it may be classified under Chapter 69.

Core criteria for classification: 1. Whether the commodity material is a non-metallic mineral; 2. Whether it is an article not named under other headings of Chapter 68; 3. Whether it has undergone ceramization processing (if ceramic, classify under Chapter 69); 4. Whether it has glass characteristics (if glass, classify under Chapter 70); 5. Whether it is a refractory article (if refractory, classify under 6815 or 6902, etc.). 681599 is a residual subheading applicable to non-metallic mineral articles not specifically named. 681510 Non-electrical articles of graphite or other carbon: 681510 applies only to articles of graphite or other carbon, while 681599 applies to other non-metallic mineral articles, such as mineral wool, vermiculite, etc. 681520 Articles of peat: 681520 specifically refers to articles of peat, while 681599 applies to other non-metallic mineral articles made of different materials. 6902 Refractory bricks, blocks, tiles and similar refractory ceramic constructional goods: 6902 covers refractory ceramic articles that have undergone high-temperature sintering, while 681599 covers non-ceramic non-metallic mineral articles with different processing techniques. 7019 Glass fibers and articles thereof: 7019 covers glass fiber articles, which are glass materials, while 681599 covers other non-metallic mineral articles made of different materials. 6806 Slag wool, rock wool and similar mineral wools; expanded vermiculite, expanded clay, etc.: 6806 includes raw materials such as mineral wools, expanded vermiculite, etc., while 681599 includes finished products made from these materials, such as boards, sheets, etc. Is the material a non-metallic mineral? Is it already named under other headings of Chapter 68? Has it undergone ceramization processing? Does it have glass characteristics? Is it a refractory article?

What commodities are applicable to HS code 681599? 681599 applies to non-metallic mineral articles not specifically named under other subheadings of 6815, such as mineral wool boards, expanded vermiculite articles, foamed mineral material articles, etc. However, it excludes ceramic articles, glass articles, and refractory articles. How to distinguish 681599 from 6806? 6806 covers raw materials such as mineral wools, expanded vermiculite, etc., while 681599 covers finished products made from these materials, such as boards, sheets, rolls, etc. If the commodity is loose fibers or granules, it is usually classified under 6806; if it has been formed into specific shapes, it is classified under 681599. Are mineral wool articles classified under 681599 or 6806? If the mineral wool is loose fibers or granules, classify under 6806; if it has been processed into boards, sheets, rolls, etc., classify under 681599. The key is whether it has been formed. What are the declaration elements for 681599? It is necessary to declare the product name, material, use, appearance, specifications and dimensions, brand, model, processing method, etc. The material should be specific, and the use should be clear to facilitate customs classification. How to check the tariff rate for 681599? Tariff rates may change. It is recommended to check the latest rates through the official website of the General Administration of Customs or the International Trade Single Window. You may also consult a customs broker or use third-party query tools. What is the difference between 681599 and 6902? 6902 covers refractory ceramic articles that have undergone high-temperature sintering, while 681599 covers non-ceramic non-metallic mineral articles with different processing techniques. If the commodity has undergone ceramic sintering, it should be classified under 6902. What are the regulatory conditions for 681599? Regulatory conditions vary depending on the specific composition and use of the commodity and may involve entry-exit inspection and quarantine. It is recommended to check the regulatory conditions table published by customs or consult the local customs. Is 681599 applicable to carbon articles? Not applicable. If carbon articles are for non-electrical use, they should be classified under 681510; if for electrical use, under 8545, etc. 681599 applies to other non-metallic mineral articles.