The shell of this product is made of high-quality cold-rolled steel plate sprayed with plastic. The inner tank and the upper cover are made of stainless-steel plates, and the outer shell is filled with high-quality insulation materials between the inner tanks. The overall structure design is reasonable, and the appearance is beautiful and generous. The temperature control system adopts digital microcomputer intelligent control. Strong thermal sensitivity, high sensitivity, can be adjusted arbitrarily within the scope of use. The heating device adopts a closed heater, which is directly immersed in water with little heat loss.