Dongguan Zhongmai Electronics Co., Ltd. specialize in producing Ultrasonic Atomization (diameter 10mm, 13.8mm, 16mm, 20mm microvoid atomization / 1.7MHz, 2.4MHz glass glaze atomization ) ;Ultrasonic Sensors (open type,waterproof type); Ultrasonic Speaker (20KHz, 40KHz);  Piezo Ceramic (Piezoelectric Power Sheet / Piezo element) ; Buzzer (mechanical buzzer / piezo buzzer / SMD buzzer / magnetic buzzer);MIC and other components, to meet different customer needs, product variety and diverse, and constantly create new value!