# Group 4002: Treatment or processing services for metal materials

The goods or services items in China trademark similarity group 4002, Treatment or processing services for metal materials, in class 40, with English and Chinese names.

Canonical URL: https://ginbing.com/docs/china-trademark/classes/40/4002
Markdown URL: https://ginbing.com/docs/china-trademark/classes/40/4002/index.md

## Group

金属材料处理或加工服务

In [class 40, Treatment of materials services](/docs/china-trademark/classes/40).

## Items

- Magnetization - 磁化, item 400004, Nice item
- Silver plating - 镀银, item 400007, Nice item
- Soldering - 锡焊, item 400011, Nice item
- Cadmium plating - 镀镉, item 400013, Nice item
- Chromium plating - 镀铬, item 400017, Nice item
- Metal plating - 金属电镀, item 400018, Nice item
- Gilding - 涂金, item 400024, Nice item
- Electroplating - 电镀, item 400026, Nice item
- Tin plating - 镀锡, item 400027, Nice item
- Blacksmithing - 铁器加工, item 400029, Nice item
- Millworking - 铣削加工, item 400031, Nice item
- Galvanization - 镀锌, item 400034, Nice item
- Metal treating - 金属处理, item 400042, Nice item
- Metal tempering - 金属回火, item 400043, Nice item
- Nickel plating - 镀镍, item 400045, Nice item
- Gold plating - 镀金, item 400085, Nice item
- Laser scribing - 激光划线, item 400086, Nice item
- Refining services - 精炼, item 400093, Nice item
- Boilermaking - 锅炉制造, item 400099, Nice item
- Metal casting - 金属铸造, item 400100, Nice item
- Key cutting - 配钥匙, item 400108, Nice item
- Welding services - 焊接服务, item 400125, Nice item
- Annealing - 退火, Non-standard item
- Applying finish to stainless steel sheets and coils - 对不锈钢片材和卷材进行表面处理, Non-standard item
- Cutting of metals - 金属切割, Non-standard item
- Degaussing - 消磁, Non-standard item
- Demagnetization - 退磁, Non-standard item
- Die casting - 模具铸造, Non-standard item
- Die-casting of metals - 金属压铸, Non-standard item
- Drilling of metals - 金属钻孔, Non-standard item
- Enamelling of metals - 金属镀釉, Non-standard item
- Engraving of metal - 金属雕刻, Non-standard item
- Etching of metal - 金属蚀刻, Non-standard item
- Goldsmithing - 金器加工, Non-standard item
- Hardening of metals - 金属硬化, Non-standard item
- Heat treatment of metals - 金属热处理, Non-standard item
- Heat treatment of pipes and tubes made of metal - 金属管的热处理, Non-standard item
- Hot dipping - 热浸镀, Non-standard item
- Metal brazing - 金属钎焊, Non-standard item
- Metal laminating - 金属层压, Non-standard item
- Metal melting services - 金属熔炼服务, Non-standard item
- Metal plating and laminating - 金属电镀及层压, Non-standard item
- Metal stamping - 金属冲压, Non-standard item
- Metal welding - 金属焊接, Non-standard item
- Metallizing - 物体表面金属化服务, Non-standard item
- Metalworking - 金属加工, Non-standard item
- Processing of steel - 钢加工, Non-standard item
- Refining of metals - 金属精炼, Non-standard item
- Rental of electric welding equipment - 电焊设备出租, Non-standard item
- Rental of gas-operated welding apparatus - 气焊设备出租, Non-standard item
- Silversmithing - 银器制作, Non-standard item
- Tin smithing - 锡器加工, Non-standard item
- Treatment of aluminum - 铝的处理, Non-standard item
- Welding - 焊接, Non-standard 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.