The cooling and heating tank, featuring energy saving,sound attenuation, corrosion resistance, high production capacity convenient cleaning,etc. it is widely used in industrial as milk,food,pharmacy,chemistry and drink, as necessary equpment as heating,cooling ,heat preservation,sterilization or serosity storage, it is specially suitable for milk pasteurization and heat preservation, also as the the necessary equipment in ice cream production line, this equipment consist of storage vessel,cycloi-pin wheel planetary gear speed reducer,agitator and thermometer with range of 0--100'C.