... 40KHZ Output power:300-4200w Used in toys,electric,stationery Ultrasound Transducer for welding (Ultrasonic Sensor, ... are widely applied in the ultrasonic, household electrical appliance, electric equipments, computer, wire and wireless telecommunications equipments etc. ... workshop Welcome contact us for more details !! Xiamen Jinrong Ultrasonic Equipment Co., Ltd. Add: The Second Floor Building No.5, ...