... Following the post-ontology,put the elastic band of ultrasonic fusion on both sides of the mask body, just need one person ... completion of machine automation, Production Process: Import Ontology film, Sideband feeding,cut the elastic short,/welding, Side bags, side-band ... function, collecting, testing fastDesign:This is a principle of the use of ultrasound to make cloth, leather, plastics, non-woven ...