Athena (YDN) Ultrasonic Machinery Co.Ltd. is making Ultrasonic sewing machine used to seal nonwoven products ultrasonically Athena (YDN) Ultrasonic Machinery Co., Ltd. We are making Ultrasonic sewing machine which is used to make nonwoven products ,like operating gown, non woven bags,sheo cover, air filting bags. Sell YDN -15 Ultrasonic Sewing Machine for making nonwoven operating gown