ultrasonic welder with styled bag machine Uses pe pp pvc opp material such as bag machine can prevent leakage ultrasonic welder with styled bag machine 1,Uses: PE, PP, PVC, OPP material such as plastic bags machine,can be equipped with 3-side saeal bag and styled bag machine used for automatic welding production lines.2, Features:1) Using ultrasonic welding ,spot welding ,product appearance ...