Need to go through the formalities are:
1, food hygiene license (go to health supervision office); 2, fire safety license (to the fire station); 3. Tax registration certificate (to the local tax bureau); 4. Business license (handled by the administrative department for industry and commerce); 5, environmental protection permit (to the environmental protection department); 6, health certificate (go to major hospitals for physical examination), etc.
The specific processing time depends on local conditions, and local departments can be consulted for specific matters in different regions.