... control steady,convenient operation. Self-acting roller shutters forming machine is designed by us,it could be control steady,convenient ... . HZ-77Single side unwinding frameroll forming main motorPolyester blistering machine Air pressure automatic cutterAir pressure automatic punching machineStackerThickness:0.27 ... Spec:HZ37,HZ42,HZ55, HZ65,HZ77,HZ90 Self-acting roller shutter door forming machine