Operating Vacuum Degree :0.04-0.05MPa (adjustable). You pay us what you see on the invoice, i. Or replace item for you free of charge. We will reply to you within 48 hours.Please kindly wait for us. We are located in Beijing, welcome to visit us. The item "Portable Electric Goats/Cows Milking Machine Piston Type Milking machine" is in sale since Monday, August 14, 2017. This item is in the category "Business & Industrial\Agriculture & Forestry\Livestock Supplies\Cattle - Dairy". The seller is "bidexcellence888" and is located in Ottawa, Canada. This item can be shipped worldwide.