1. Built-in PC chips, multi-circuit ultrasonic protection system to make the machine run safely; 2. The performance of the machine reaches international level with automatic frequency tracking system and ultrasonic soft-starting technology; 3. Variety of roller patterns, other roller designs available according to customer requirements; 4. Four times faster than sewing machines, minimal operator training required; 5. Sealing without thread replacing the sewing needles, good welding strength.