What are the Apple headset foundries?

Generally, there are Foxconn and Fengda in Vietnam.

Fjikon (Hong Kong Fuji Hi-Tech): The factory is located in Humen, Dongguan. The main OEM customers are Sony, Innovation, NEC and Sharp. At present, the company is striving for a free headset from a European mobile phone manufacturer. It is expected that in the next one to two years, the sales model of mobile phone bundled headphones will be very popular, and the demand for headphones will be huge.

Foster (Japan Fengda Electric Appliance Co., Ltd.): The factory is located in Panyu, Guangzhou, and the other factory is located in Dongguan, Guangdong, doing OEM work for German Sennheiser headphones. Fengda's main business is walkman earplugs, which occupies a very large market. The main OEM customers are: German Sennheiser (mainly MX series), Apple IPOD, Sharp, iriver, Sony, Tiesanjiao, Aihua and other brands of earphone products.