GCI Electro-Ceramic Co. is the first piezoelectronic technology researcher in China, and have always been a leading manufacturer of acoustic components. With 30 years experience, we have developed a wide range of acoustic components, including tweeters, piezo speakers, piezo buzzers and piezo ceramic diaphragms ,humidifier,perfume atomizer,which are widely used in multimedia, electronics, home appliances, security products and telecommunication devices.