Protection methods:

1. Register a trademark

2. Apply for a design patent for packaging

3. If there is a special process that can Production can apply for invention patents. For example, the production process of rice dumplings has been patented

4. Sign a commissioned production contract and stipulate that the other party shall not produce the same or similar goods without your consent, and agree on liquidated damages

However, there are new regulations for individuals applying for trademarks, "Notes on natural persons applying for trademark registration"/shantm/blog/item/eba0662396b32c529822ed2e.html

The above is for reference only