Athena YDN Ultrasonic machine can be used to make nonwoven bags,Coveralls, Sheo Covers,Car Cover and other nonwoven products. Athena YDN Ultrasonic machine can be usde to make nonwoven bags,Coveralls, Sheo Covers,Car Cover and other nonwoven products. Nonwoven bags Making Machine-YDN Ultrasonic sewing/Seaming/Welding Machine