1, the difference between industrial processed food and catering processed food is that industrial processed food is a semi-finished product, and catering needs to be processed into food that can be used directly.

2. Food processing industry refers to food and feed processing industry, vegetable oil processing industry, sugar industry, slaughter and meat and egg processing industry, aquatic product processing industry, edible salt processing industry and other food processing industries. The raw materials of food are mainly animals and plants, not agricultural and sideline products. Therefore, the food industry is closely related to agriculture (including agriculture, forestry, animal husbandry and by-products). The uniqueness of food processing industry lies in transforming raw materials into high-value products, which is a transformation process to ensure food safety and prolong shelf life.