According to the catalogue collection, the prefabricated vegetable production enterprises, semi-finished vegetable enterprises, semi-finished vegetables and prefabricated vegetables in Qingdao, Shandong Province have simplified the production steps, and can be directly served as convenient special dishes through cooking methods such as heating or steaming. These companies are: Lu Gongzi Prefabricated Food Studio in Jimo District, Qingdao Taixiangyuan Prefabricated Food Standardization Institute Co., Ltd., jiaozhou city Hua Xian Frozen Food Wholesale Department, Chengyang Mingruijia Frozen Food Store, jimo city Yixinrui Frozen Food Factory, etc.