1. Contact the brand first: contact the headquarters of Soy Sauce Potato through official website, telephone, email or other channels to express the intention to join. They will provide relevant information and guidance, and introduce their accession policies and requirements in detail.

2. Secondly, submit the application: fill in and submit the application form for joining, and provide relevant business information and supporting documents. These documents include personal identification, financial status certificate, business plan, etc.

3. Final training and preparation for opening a store: Attend training courses provided by brands and learn their business models and product making methods. At the same time, do a good job in store decoration, equipment procurement, staff training and other preparations. As planned. After completing all the preparations, I officially opened my business according to the requirements of the brand and started to run my own chain store in sauce potatoes.