1 The inner of the fermentation tank are adopted 304 stainless steel. Use polyurethane to keep warm. The outside scarfskin is according to the customer's requirement. You can choice stainless steel polishes carbon steel spray finishing and so on. 2 Adopted the international standard of fermentation technology diverse methods to control the temperature. The inner surface of the tank is mirror-polished. The standard is¡ü0.8um ¡ü0.6um ¡ü0.2um. Completely meet the demanding of plc and sterilize system. 3 The cooling jacket can achieve all countrie's standard supply miller arch corrugated plate and so on. Meet all kinds of cooling technology of coolant and pressure.