Universal specializes in making electromagnetic transducer, Piezo transducer, piezo buzzer,micro speaker, receiver, microphone and inductor. We have the advanced B&K 2012 audio analyzer, X spectrometer and Anechoic Chamber, assure the best quality products with competitive prices. We are proud to be certified with ISO9001:2000 and ISO14001 and TS16949 with all products passed the “ROHS” standa...