Metering Pump for Perfusion Machine 1,Highly nonreactive, 2,Tiny thermal expansion. 3,Crystal ... of filling machines made in China; *Liquid filling machines, such as BOSCH, B+S, GROENINGER, made in Germany, Italy, America ... oxide acid-caustic, corrosion resistance, high temperature resistance, and suitable for repeating sterilization under hot condition. Superhigh material hardness---high wearability ...