Operating vacuum degree: 0.04-0.05MPa(adjustable). Only unused, undamaged and original condition item can be qualified for a return.The sale of this item may be subject to regulation by the U. Food and Drug Administration and state and local regulatory agencies. All of our products are CE approved. Please kindly check the copy of the certificate in the listing below. The item "Compact Single Tank Milker Electric Vacuum Pump Milking Machine For Cows Farm" is in sale since Friday, December 15, 2017. This item is in the category "Business, Office & Industrial\Agriculture/Farming\Livestock Supplies". The seller is "vipshoppingmall" and is located in Beijing. This item can be shipped to all countries in Europe, all countries in continental Asia, United States, Canada, Australia.