1.Air hole punching machine 2.Air holes / air bag butterfly ... film, drawbar, etc Air Butterfly hole punching machine Air hole / butterfly hole punch machine, the national standard type specification 25 * ... 6 * 9mm/30 * 6 * 9mm, used in making machine, etc. Air holes / air bag butterfly hole punch for ... film, drawbar, etc.. PE, PP, OPP, PO, PVC, PPE, CPE and other materials, products can be thrust 0 ...