4006 Glass processing services (Class 40 similar group): items and numbers

Notes on similar group 4006

Official notes (CNIPA Table of Similar Goods and Services, 2026 text; J&C reference translation)

This similar group is similar to polishing, grinding, grinding and polishing, sandblasting services, material-planing treatment and material-sawing services in 4001, and is cross-searched with grinding treatment and grinding and polishing in 4002 in the 9th and earlier editions.

Practice notes (J&C)

This group has only glassware blowing, glass-window tinting treatment, optical-glass grinding and window-tinting services. Official note: this group is similar to polishing and grinding in 4001. Car window-film application is filed under “window-tinting services” in this group, and window film (as goods) is in 1703 of Class 17 (practical tip). No additions or deletions to this group in 2026.

Applies to the 2026 edition · Published 2026-10-09 · Reviewed 2026-10-09

Data version: CNIPA Table of Similar Goods and Services, 2026 text (based on the 13th edition of the Nice Classification, NCL 13-2026, in force since 1 January 2026). Chinese terms, groups and numbers follow the official text; English and Spanish terms are taken from WIPO, while CNIPA-specific items (C numbers) carry reference translations, whose English was fully revised on 8 October 2026. NCL 13-2027 enters into force on 1 January 2027. Selected reference translations were revised on 13 October 2026.

Filing a trademark in China? See our guide: Registering a trademark in mainland China as a foreign applicant

Class	Group	Item No.	Chinese	English
40	4006	400126	车窗染色服务	tinting of car windows
40	4006	400062	吹制玻璃器皿	glass-blowing
40	4006	400088	光学玻璃研磨	optical glass grinding
40	4006	400065	玻璃窗着色处理（表面涂层）	window tinting treatment being surface coating