1, Wholesale Market: Wholesale food markets usually provide bulk food purchases, including semi-finished buns and steamed buns. You can go to the local wholesale food market or farmers' market to negotiate prices and purchases with suppliers.

2. Food suppliers: Some companies or suppliers specializing in food supply and wholesale provide semi-finished steamed buns and steamed buns. You can search or inquire about local commercial yellow pages through the Internet, find local food suppliers, contact them and learn about prices and purchasing methods.

3. Supermarkets: Some large supermarkets provide semi-finished steamed buns and steamed buns, which can be purchased in local supermarkets. Supermarkets will have multiple brands and specifications to choose from, and there will be regular promotional activities to select products with higher prices.