... double head pneumatic high frequency plastic welding machine 1)high frequency welder 2)sturdy,safety 3)ISO9001:2008 and CE double head pneumatic high frequency plastic welding machineDescirption this high ... and cloth etc. main applicationhigh frequency plastic packagingincluding heat sealing and trimming for ... ,boat,life jacket,toy,stationery,raincoat,plastic cover,purse handbag,leather strap,album ...