Chapter 70 covers glass and glassware, including flat glass, glass fibers, glassware, glass instruments, etc. This chapter is divided into multiple headings, covering everything from raw glass to deeply processed glass products. Heading 7005 belongs to the mid-stream products of this chapter, namely flat glass that has not been further processed, but has undergone float or polishing processes, resulting in a high degree of flatness. Heading 7005 covers float glass sheets and polished glass sheets, including flat glass produced by the float process, as well as flat glass that has undergone grinding or polishing treatment. These glasses typically have uniform thickness and flat surfaces, and are used in fields such as construction, automobiles, mirrors, and displays. However, it does not include products that have been further processed such as tempered, laminated, or coated (classified under 7006-7009). The first 2 digits 70 represent Chapter 70 (glass and glassware). Digits 3-4, 05, represent heading 7005, referring to float glass sheets and polished glass sheets. Digits 5-6, 30, are the subheading, further limited to "other non-wired glass," i.e., float or polished glass sheets other than wired glass. The overall code 700530 means "float glass sheets and polished glass sheets, non-wired." This commodity is float or polished glass sheets that have not undergone wired, tempered, laminated, or other processing, and is therefore classified under 7005 rather than 7006 (processed glass) or 7003 (cast or rolled glass). The float process and polishing treatment give it a flat surface, consistent with the description of 7005. If the glass is wired, it is classified under the wired subheading of 7005; if it is tempered, it is classified under 7007.

Product Name: The specific name of the declared commodity, such as "float glass sheet" or "polished glass sheet," which should accurately reflect the processing technique. Material: Describe the main composition of the glass, such as soda-lime-silica glass, and whether it contains other additive components. Processing Technique: Describe the production process in detail, such as "float process" or "polishing treatment," and whether further processing has been done. Wired or Not: Declare whether metal wire mesh is embedded inside the glass; wired glass is classified under other subheadings of 7005. Thickness: Declare the thickness of the glass in millimeters; thickness affects classification and tax rates. Dimensions: Declare the length and width dimensions of the glass, usually in millimeters or centimeters, affecting classification. Use: Explain the final use of the glass, such as construction, automobiles, furniture, etc., which helps with classification. Product Name: Float glass sheet; Material: Soda-lime-silica glass; Processing Technique: Float process, not polished; Wired or Not: No; Thickness: 5mm; Dimensions: 2440mm×1830mm; Use: Building curtain wall. Confusing float glass with ordinary flat glass, failing to specify the float process. Neglecting to declare whether wired, leading to subheading errors. Inaccurate declaration of thickness and dimensions, affecting customs valuation and classification.

The core basis for classification is the glass processing technique and whether it is wired. Float glass is produced by the float process and has a flat surface; polished glass has undergone mechanical polishing. Neither has undergone further processing such as tempering or lamination, and neither is wired, so they are classified under 700530. If the glass is wired, it is classified under other subheadings of 7005; if tempered, it is classified under 7007. 700510 Wired glass sheets: Wired glass has a metal wire mesh inside, while 700530 is non-wired glass. 700600 Processed glass: 700600 includes further processing such as tempering, lamination, and coating, while 700530 is only float or polished. 7003 Cast or rolled glass: 7003 is cast or rolled glass with an uneven surface, while 700530 is float or polished with a flat surface. 700719 Tempered glass: Tempered glass has undergone heat treatment and has high strength, while 700530 has not been tempered. Is it clearly float or polished process? Is the wired condition declared? Are thickness and dimensions accurate? Has it undergone tempering, lamination, or other processing? Does the use match the classification?

How to determine whether glass belongs to 700530? First confirm that the glass is produced by float or polishing process and has not undergone further processing such as wiring, tempering, or lamination. If so, it is classified under 700530. Otherwise, classify under other codes according to the processing method. What is the difference between float glass and polished glass? Float glass is produced by the float process and has a flat surface; polished glass has undergone mechanical polishing treatment. Both can be classified under 7005. However, if further processed after polishing, they may be classified under other codes. Can 700530 glass be used for automobiles? Yes, but automotive glass usually needs to be tempered or laminated; if processed, it is classified under 7007, etc. Unprocessed float glass can be used for automotive side windows, etc., but must meet safety standards. How to fill in the processing technique when declaring? It should be described in detail, such as "float process" or "polishing treatment," avoiding vague terms like "ordinary glass." Which code is wired glass classified under? Wired glass is classified under other subheadings of 7005, such as 700510 (wired glass sheets), not 700530. Does thickness affect classification? Thickness itself does not affect the classification of 700530, but it may affect tax rates and valuation, and must be accurately declared. How to check the tax rate for 700530? It can be checked through customs tariff schedules, official websites, or by consulting a customs broker; tax rates change according to national policies.