Changzhou Runyuda Electronics Co.,Ltd. is one of the world’s leading manufacturers of acoustic components. We have gained leading technical competence in design and production of acoustic components. Welcome to check our website: xxxxx We supply a full range of polyphonic speakers, miniature receivers, multi-function devices, speakers, transducers, buzzers, microphones and headsets for various industries. Runyuda Electronics is a QS9000, ISO9001 and ISO14001 certified manufacturer. We have partnered with some of the world’s most famous brands to produce quality acoustic components for their mobile phones, computers, cars, medical instruments, hearing aids, cordless phones, MP3 players, game consoles and many other consumer devices.