Pneumatic punching machines, also known as pneumatic drilling machines, plastic bag puncher, was aided in the bag of a pneumatic punch mould. Signal is given to the bagging machine solenoid valves and pneumatic mold. The structure is similar to die, mainly used for plastic bags, paper punch. The device in the early 90 's of the last century from Taiwan into mainland. Technical approval: pneumatic punching machine product clamp are made of precision cast alloy material, dynamic high precision stamping cylinder, punch the imported steel (ASP-60) structure in line with needs of stamping, beautiful shape, high frequency, strong wear resistance, long service life, the frequency of up to 320 times.