Fiberglass magnetic EVA door curtain fixing ultrasonic plastic welding machine requires no auxiliary materials, completes instantly, with no burrs on the outer edge, pollution-free, environmentally friendly, and replaces glue. The principle of ultrasonic welding involves friction heating at the welding position of the product itself to melt and bond, suitable for PBT, PA66 nylon fiberglass (flame-retardant reinforced engineering plastic high-temperature resistant polyamide), ABS, PC, acrylic, PP, PU (polyurethane), PS, POM, PPO/PPE (photovoltaic junction box), PTFE breathable membrane, ASA, PE, PVE, chemical fiber, and other materials.