Inner Ear-loop Face Mask Machine Operational Principle: Kunshan Nekon Ultrasonic Inner Ear-loop Mask Machine uses ultrasonic technology to weld the elastic band to the two sides of Face Mask Blank, then finishes the whole procedure of making a complete inner ear-loop face mask.Our companies'face mask machine only needs one operator to put the face mask blank onto the conveyor belt, then it will finish all the remaining processing...