1.Bose, Ph.D. (Dr. Audio-visual System (Shanghai) Co., Ltd., one of the earliest speaker manufacturers in the world, and a leading technology enterprise in the global audio field, 1964 started in the United States).
2.JBL (USA 65438-0946, Harman (China) Investment Co., Ltd., a global manufacturer of audio and infotainment products, and one of the largest professional speaker manufacturers in the world).
3.Hivi Hivi (the world's top multinational speaker and speaker manufacturer, the world-renowned Hi-End advanced speaker manufacturer, Guangzhou Hivi Electric Co., Ltd.).
4. Yamaha Yamaha (founded in 1887, a world-famous audio-visual brand, one of the largest musical instrument manufacturers in the world, Yamaha Musical Instrument Audio (China) Investment Co., Ltd.).
5. Philips (189 1 founded in the Netherlands, one of the largest electronics companies in the world, with 100 of the most valuable brands in the world, Philips Electronics (China) Investment Co., Ltd.).
6. Shanshui Sansui (founded in Japan 1944, a world-famous loudspeaker brand, one of the most influential brands in China, a large listed company, Guoguang Electric Co., Ltd.).
7. SONY Sony (founded in 1946, Japan, a global leading brand of high-end images, a world-renowned brand and a leader in the information technology industry, Sony (China) Co., Ltd.).
8. Jieweishi JVC (founded in 1927, a subsidiary of Victor Phonograph Company of the United States, one of the top ten home audio brands, Jieweishi (China) Investment Co., Ltd.).
9. Pioneer (founded in 1937, pioneer electronics (China) Investment Co., Ltd., a world-renowned brand and a leading brand in audio-visual entertainment and optical disc technology).
10, rambler rambler (Beijing famous trademark, high-tech enterprise, one of the most growing new listed companies in China, leading brand in the industry, Shenzhen rambler technology co., ltd.)