When applying for an invention patent, the application documents should include: invention patent request, abstract, summary drawings (when applicable), description, claims, description drawings (when applicable), each in duplicate .
When applying for a utility model patent, the application documents shall include: utility model patent request, description, description drawings, claims, abstract and abstract drawings, each in duplicate.
When applying for a design patent, the application documents should include: design patent request letter, pictures or photos, each in duplicate. If you require color protection, you should also submit color pictures or photos in duplicate. If you submit pictures, both copies should be pictures. If you submit photos, both copies should be photos. Pictures or photos should not be mixed. If a description is needed for pictures or photos, a brief description of the design should be submitted in duplicate.
Related documents:
Utility Model Application Writing Sample
Design Application Writing Sample (Drawing View)
Design Application Writing sample (photo view)
For details, you can consult the professional patent application agency-Zhuanzhihui.