All kinds of pools should be clearly marked to indicate the purpose. The tableware cleaning and disinfection pool should be dedicated and separated from the food raw materials, cleaning utensils, tools and container cleaning pools that come into contact with indirect food. The pool should be made of impervious materials such as stainless steel or ceramics, which is not easy to scale and easy to clean. If chemical disinfection is used, there should be at least 3 special pools.