Applied to the continuous process high frequency welding products,such as writing-case,which is made from PVC,EVA,PU,PETG,GAG,PP 1.Applied to the continuous process high frequecy welding products,such as writing-case,which is made from PVC,EVA,PU,PETG,GAG,PP material,and also air filter bag,infusion bag,blood bag,urine bag,inner-page design,glue box embossing feeding.2.Coordinate with welding, ...