1. Business license. "Handed by the Industrial and Commercial Bureau" 2. Tax registration certificate "Handled by the Local Taxation Bureau" 3. Health license "Handled by the Food Hygiene Supervision and Administration Office" "Including employee health certificate" 4. Fire safety license. "Fire Brigade Management". These are must-dos. If all four certificates are complete, it's basically fine.

As for the size of the investment, which cannot be budgeted, this is directly related to the location, house rental, decoration fees, etc. The location selection is directly related to the consumer groups you face.