legal, and they can form a contractual relationship.
catering companies and branches are still independent legal persons, only based on a contract or investment control relationship. Chain operation is actually a form of enterprise organization, based on enterprises, and must be in accordance with the relevant enterprise law.
for example, the company law, the sole proprietorship enterprise law and the partnership enterprise law apply different legal provisions according to the different nature of enterprises, and the organizational forms of chain enterprises are also different.