Fermentation of dairy products and alcohol is a sterile and pollution-free process.The equipment adopts aseptic system to prevent the pollution by microbes in the air and greatly prolong the guarantee period and purity of your products.The tank is specially designed and installed with aseptic respiratory air vent or aseptic positive pressure fermenting system.The tank can be made into heat preservation type and jacket type to carry out circulative heating and cooling through adding heating or cooling medium.