high frequency welder for PVC 1)double side sealing 2)high frequency welding 3)ISO9001: ... suitable for these material like pure PVC,soft gums or hard rubber(content above 30%PVC).leather and cloth etc. main applicationhigh ... ,trademarks,garments,shoe and cap embossing,leather embossing;gas mattress,boat,life jacket,toy,stationery,raincoat,plastic cover,purse handbag,leather ...