2. Ruishengda (one of the world's largest hearing aid brands, one of the world's top acoustics and audiology technology enterprises, Ruishengda Hearing Equipment Trading (Shanghai) Co., Ltd.)
3. Stark (1967, Stark Hearing Technology (Suzhou) Co., Ltd., one of the largest manufacturers of customized hearing AIDS in the world).
4. Fengli (a multinational listed company specializing in R&D/production and sales of high-tech hearing AIDS and FM wireless FM hearing AIDS, Fengli Hearing Technology (Shanghai) Co., Ltd.)
5. Youlikang (1964, Fengli Hearing Technology (Shanghai) Co., Ltd., an internationally renowned brand and one of the top ten hearing aid brands, is committed to developing more optimized hearing solutions).
6.widex( 1956 started in Denmark, is the world's leading developer and manufacturer of high-tech hearing AIDS, and one of the top ten hearing aid brands, widex Hearing Aids (Shanghai) Co., Ltd.).
7. Aodekang (1904 was founded in Denmark, and Aodekang (Shanghai) Hearing Technology Co., Ltd. is one of the world-famous professional manufacturers of high-quality hearing aid products).
8. Li Sheng (one of the larger production bases of customized in-ear/in-ear and invisible deep-ear hearing AIDS in China, a wholly foreign-owned hearing aid manufacturer, Li Sheng Hearing Aids (Fuzhou) Co., Ltd.)
9. Oushida (a world-renowned hearing aid manufacturer, a large-scale manufacturer integrating hearing aid products, hearing aid equipment and hearing aid production, Oushida Hearing Technology (Xiamen) Co., Ltd.)
10, xinsheng (Xiamen xinsheng technology co., ltd., dedicated to the research and development/production and sales of high-tech hearing aid products, with the core technology from Denmark and great influence in the field of audiology).