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Sh-15kHz Digital High-Power Ultrasonic Plastic Welding Machine Customized Series, Find Details and Price about 20kHz /15kHz Ultrasonic Plastic Welding Machine PP Material Ultrasonic Plastic Welding Machine from Sh-15kHz Digital High-Power Ultrasonic Plastic Welding Machine Customized Series - Dongguan Shenghe Ultrasonic Technology Co., Ltd.