As you said, you currently have two business licenses at home, which is in line with the industrial and commercial optimization policy of "one address and multiple photos". If the business scope of one of the business licenses involves catering, food and other business activities, a food business license must be obtained. The specific process is as follows:
1. Prepare the original business license, the ID card of the principal responsible person, the original and photocopy of the health certificate of the relevant staff, the layout of the business premises and functional areas, the list of major equipment and facilities for food production, and other materials;
2. Log in to official website of Food and Drug Administration and submit relevant materials online;
3. After receiving the relevant materials, the Food and Drug Administration will review the materials;
4. After passing the examination and approval, the relevant registration authority personnel will be arranged to go to the site for assessment;
6. After passing the on-site assessment, the applicant can obtain the food business license.