Changzhou Sound Dragon Electronics and Acoustics Co., Ltd. ( Changzhou Sound Dragon Broadcast Material Factory) was established in 1968, covering an area of over 20, 000 square meters. It is specialized in manufacturing loudspeakers, Hi-fi sound boxes, home theatre series of sound boxes with 700 staff and workers, fixed assets RMB 40, 000, 000. 00. The company has imported equipments for manufacturing and testing. 6 loudspeaker assembly lines, 2 sound box assembly lines, 3 voice coil manufacturing lines and 25 punch machines. The monthly production capacity is 1. 5 million pieces of loudspeakers and 100, 000 pieces of sound boxes. The company make self-use moulds for speaker frames and other punch parts, voice coils and cones. In 1989, the company started its cooperation with several Japanese loudspeaker manufacturers, learning effectively their management concept, management method and production technology. In 1999, the company invited Japanese loudspeaker design engineers working in the company, making high and middle level products design and application. The company has been taking full advantage of technology, management and parts manufacturing to develop high quality and good price-property ratio loudspeakers and series of sound box products. We have over 400 kinds of different size speakers for automotive, computer, telecom, TV, and sound box application, over 100 kinds of sound box system with good technology and quality. The company has a team of good skilled operators. The company quality policy is fine selection of material, elaborate operation and whole-hearted service, and the company production yield rate is 99. 2%.