Our storage tank can be manufactured with the material of carbon steel or stainless steel. The inner tank is polished to Ra≤0.45um. the external part adopts mirror plate or sand grinding plate for heat insulation. The water inlet, reflux vent, sterilization vent, cleaning vent and manhole are provided at the top and air breathing apparatus. There are vertical and horizontal tanks with different volumes of 1m3, 2m3, 3m3, 4m3, 5m3, 6m3, 8m3, 10m3 and bigger.