1. Such series vessel has the functions of heading and heat preservation, manufactured, pressure-tested and checked in accordance with the< Technology sepcifications for steel welded vessel>. 2. The standard specifications from 100L to 7000L and order-design or order-manufacture are all available. 3. The sealing of agitating shaft is of mechanical sealing of imported health class. The speed reducer is of frand, a famous brand from Germany of SEW. The control by inverter is available. 4. The joint is of quick-acting type in compliance with ISO standard. The inner part is made of 316L of 304. 5. At the tank body are respectively fluid level gauge(the mode is non-contact supersonic, static-pressure transmission or glass tube), breathing apparatus, sterilization steam opening, thermometer(digital-indicated type or dial type), CIP universal tank-cleaning device, viewing mirror at lamp hole, some fluid inlets & outlets and manhole.