1. According to the inquiry of Luckin Coffee official website, there are three kinds of rags. Clean up the residual coffee outside the cup, triple pool, billboard and distribution box with a blue rag.

2. Secondly, use a pink rag to wipe food contact categories, such as steamed milk sticks and scissors. The ice shovel needs to be wiped with a pink rag, and the pink rag should be replaced every half hour.

3. Finally, wipe the countertop with a green rag. The green rag is replaced every two hours, and the disinfectant is replaced every four hours during work.