It is the tank that is used for the preservation of milk that is gained from the farms or stored in factories. The tanks are made including triple jackets and on the middle jacket there is an evaporator that is stitched up by specific laser welding, and also inside of the evaporator, there is high pressured cooling gas. On the outside of the tank, there is polyurethane reinforced insulation to protect the temperature. The mixer inside of the tanks is designed not to disturb the nature of the product. On the tanks, an automatic washing system is used. An electronic weighing system is also placed to detect quantity in the tanks. In tank cooling groups environmentally friendly gas is used. Energy saving is prioritized. It is designed to cool down the milk in a short time