# Group 3909: Lock operation services

The goods or services items in China trademark similarity group 3909, Lock operation services, in class 39, with English and Chinese names.

Canonical URL: https://ginbing.com/docs/china-trademark/classes/39/3909
Markdown URL: https://ginbing.com/docs/china-trademark/classes/39/3909/index.md

## Group

水闸管理服务

In [class 39, Transport and storage services](/docs/china-trademark/classes/39).

## Items

- Operating canal locks - 操作运河水闸, item 390032, Nice item

## Source

Classes follow the Nice Classification. Similarity groups and Chinese item names follow CNIPA's classification of similar goods and services, as used in Ginbing's filing flow on 2026-10-12. CNIPA's current list is authoritative.

## Credit

The list is CNIPA’s classification of similar goods and services as of 2026-10-12. Nice Classification English is © WIPO.

## Next steps

- [File with Ginbing](/china-trademark-registration) - USD 150 per class, up to 10 items included. You choose the exact items in the application.
- [Let your AI pick the items](/docs/china-trademark/use-with-ai) - With Ginbing’s connector, your AI searches these items for you and prepares your filing draft.