... .Ultrasonic welding 2.Strongly fasten,good shape 3.Common for metal and plastic zip in one size TYM-205M ... *150cmNetweight: 190kgAbout us: We area factory manufacturing zipper machines for making nylon, plastic, metal & invisible zippers, zippers & zipper ... , Canada, U.S.A., Viet Nam, Pakistan, Philippines, etc. What we can offer: Vedios & manuals about how to operate & maintain our zipper ...