In order to ensure the quality and safety of edible oils, state functional agencies should strengthen the management of edible oils, and only supervise the production, processing, and sales of edible oils. Of course, it can reduce the harm to the public health of trench oil, but not to the use of trenches. Oil catering companies punish, and trench oil will never stay away from our dining table. From this we can infer:. ['Only by punishing catering companies that use gutter oil can we keep it away from our tables.', 'If we do not supervise the production, processing and sales of edible oil, we cannot prevent the trench oil from entering the table.', 'If catering companies are regulated, they are strictly prohibited from using ground oil, which will prevent ground oil from entering the table.', 'Only by monitoring the production, processing, and sales of edible oil can we prevent trench oil from entering the table.']