Seeing the publicity materials of foreign equipment, I thought about developing one myself. Does it infringe its patent?

1. Non-infringement if not used or sold in production and operation

2. Non-infringement only for research purposes

3. Non-infringement for personal use

4. Non-infringement of foreign patents that have not been patented in China

5. Non-infringement if similar schemes are different in function and principle

6. Non-infringement if the inspired part is not written in its claim