1 Sony (Japan in 1946, Fortune 500, the world's leading electronics and entertainment company, Sony (China) Co., Ltd.)

2 Alpine (Top Ten Cars Audio brand, Japan in 1967, world-renowned brand, Alpine Electronics (China) Co., Ltd.)

3 Pioneer Pioneer (Top ten car audio brands, Japan in 1938, world-renowned brand, Pioneer Electronics ( China) Investment Co., Ltd.)

4 Panasonic Panasonic (top ten car audio brands, Japan in 1918, Fortune 500, Panasonic Electric (China) Co., Ltd.)

5 JVC Automobile Audio (Japanese in 1927, world-famous car audio brand, Guangzhou Yingbida Electronics Co., Ltd.)

6 Hivi Hivi (American brand, the world's top speaker and speaker manufacturing multinational company, Guangzhou Hivi Electrical Appliances Co., Ltd.)

7 Edifier Edifier (Beijing in 1996, China's well-known trademark, leading multimedia speaker brand, Edifier Technology Company)

8 NBN Car Audio (in 1993 Zhongshan, top ten car audio brands, famous trademarks, Chuanghua Electroacoustic Electrical Appliances Co., Ltd.)

9 KENWOOD (top ten car audio brands, Japan in 1946, famous brands, Shanghai Kenwood Electronics Co., Ltd. )

10 Blaupunkt (a brand of Bosch, Bosch Trading Shanghai Co., Ltd., Bosch Trading Shanghai Co., Ltd.)

There are domestic products, and they are all available in China.

In response to your questions, I can generally only answer so much. I usually stay on the AiHIFI Forum. If you have any questions, please come to me on the expert version of the AiHIFI Audio Forum.