It is a kind of equipment used for mechanical agitation and fermentation of materials. The device adopts the mode of internal recycling, dispersing foam by mixing blades and breaking them into pieces. And an aseptic respiration system or an aseptic positive-pressure fermentation system is specially designed and installed inside the tank. In addition, the tank body is completed with a jacket to realize the heating circulation or the cooling circulation of media via jacket heating/or cooling.  All the parts in contact with media are made of the high-quality stainless steel featuring good service durability, which is in accordance with the GMP standard.