Product Description  Portable Vacuum Pump for Double Cow Milking Machine Prices Milking Machine Milking Machines Dairy Machine The milking machine is composed of milking machine and vacuum device. The sucking action of the vacuum device is used to simulate the sucking action of the calf (sheep) and suck out the cow (sheep) milk. Although using the … Continue reading China supplier Portable Vacuum Pump for Double Cow Milking Machine Prices Milking Machine Milking Machines Dairy Machine vacuum pump booster