Type of milking systems, each milk a cup in the middle of the tunnel groups can be used on both sides of the tunnel. Relative to the other milking machine, milking every cup group seldom at leisure. This is the most economical investment programs. Milk a cup in the middle of the milking machine, sets respectively for left and right sides of the milk cow. Type of milking machine have high production capacity, and higher rate of return. Only an operation can make the milk cup set and the milk ducts, vacuum tube and power supply system in place, this device is generally with diameter of 50 mm stainless steel milk ducts. This versatile system can use the gas pulsation or electronic pulse. Using He Lan McGonagall production technology and the main components of the type of milking machine, can satisfy the needs of different levels of dairy companies and farmers, is an international popular advanced machine, milking cows to partial access, suitable for all kinds of size to zap