Changzhou Duoxing Electronics Device Factory Founded in 1989. In 1994, reset up Changzhou Duoxing Electronics Co., Ltd (Changzhou E-sound Electronics Co.,Ltd) with Taiwanese. Duoxing is a professional manufacturer specializes in developing , manufacturing and sales on electro-acoustic products. Our main products include speaker, buzzer,microphone, receiver and others,which are mainly used in medical equipment, automotive instrumentation, automotive electronics, security, notebook computers, computer motherboards, cordless phones, uninterruptible power supplies, alarm , digital cameras, Bluetooth headsets, GPS and household appliances. With 22 years professional service team , Duoxing can offer the one-stop service for all of our clients .