Sandwich pots are mainly divided into vertical sandwich pots (vertical with stirring sandwich pots) and tilting sandwich pots (tilting with stirring sandwich pots) according to their forms; According to volume, it can be divided into 50 liter sandwich pot, 100 liter sandwich pot, 200 liter sandwich pot, 300 liter sandwich pot, 400 liter sandwich pot, 500 liter sandwich pot, and 600 liter sandwich pot. According to the heating method, it can be divided into steam heating sandwich pot and electric heating sandwich pot. According to the material, it can be divided into all stainless steel sandwich pots and ordinary sandwich pots (sandwich material is A3 steel).