1. Food wholesale market: Many cities have special food wholesale markets that supply all kinds of food and catering products, including cooked food. You can go to the local food wholesale market, negotiate with suppliers and buy prepared dishes.
2. Catering suppliers: Some suppliers who specialize in providing ingredients and food for the catering industry can also provide prefabricated dishes. You can contact local catering suppliers to find out whether they have prepared dishes and discuss the purchase.
3. Agricultural products market: Some agricultural products markets will also have stalls or merchants supplying prefabricated vegetables. These merchants usually buy vegetables directly from farmland, process and package them and provide them to consumers and catering industry. You can go to the local agricultural market to find a merchant who supplies prefabricated dishes.