1. Catering service operators should use sealed edible oil.

2. Catering service operators should store the sealed edible oil in a special edible oil container, and it is forbidden to mix different kinds of edible oil in one container.

3. Catering service operators shall set up edible oil use signs in special edible oil storage, edible oil use areas and food processing areas.

4. Catering service operators should change edible oil regularly, and it is forbidden to use expired edible oil.