1. Local wholesale markets: There are many famous food wholesale markets in Guangzhou, such as Tianhe Farmers' Market and Ximenkou Wholesale Market. Generally, there are merchants who supply all kinds of semi-finished foods.

2. Direct procurement by food manufacturers: Some professional food manufacturers, such as Guangdong Huafeng Steamed Bread Factory and Guangzhou Jiye Food Factory, can provide various types of semi-finished breakfast snacks such as steamed buns and steamed buns, and can directly contact the procurement.

3. Online shopping platform: At present, many e-commerce platforms (such as Taobao and JD.COM) have shops or merchants selling semi-finished breakfast products such as steamed buns, which can be purchased and ordered online.