... , seaming & side-cutting of non-knitting fabricsDescription:1.strong ultrasonic power, the maximum power up to 2500W, with small, ... and thickness.2.built-in PC chip, multi-circuit ultrasonic protection system to make the machine run safely 3.the ... machine reaches international level with automatic frequency tracking system and ultrasonic soft-starting technologyWorking power220±5V 50Hz 10A(built-in ...