the interior surface adopts electrolytic mirror polishing .the seal head(round) is subjected to spinning process, and R angle transition is in accordance with GMP standard. The blending device adopts sanitary mechanical seal and the vessels adopts polyurethane or pearl cotton for heat preservation. the interface adopts flange type as per international standard, which is convenient and sanitary, the exterior surface adopts various forms of treatment such as polishing , sand blasting, grinding or cold rolling original color matte treatment, so that the vessels can display its prominent quality at any occasion, the device is equipped with CIP cleaning spray head, sight glass, flange type rapid open hole and other accessories.