Changzhou Sound Dragon Electronics and Acoustics Co., Ltd. (Sound Dragon) was established in 1968 and reconstructed as a private enterprise in 1997. It has fixed assets of RMB 80 million and covers an area of over 20,000 square meters, Shenzhen Sulong electronics co., ltd. was established in 2009 as the domestic operation center. Sound Dragon focuses on designing, manufacturing, selling professional audio products, emphasizes R&D , quality control and holds ISO9001, ISO14001 and ISO/TS16949 Quality System Certificates. Sound Dragon is a high and new tech enterprise certificated by Jiangsu province and is prior supported by the government.