Chengyin Electronic Technology Co., Ltd in Dongguan city is a professional company that manufactures and processes hand-free earphones for all kinds of mobile telephones, MP3 earphones, earphone loudspeakers, earphone wire and a variety of hookup wire. The production procedure includes the design and production of molds, the extrusion of hookup wire, the production of loudspeakers, earphones and so on. We are devoted to satisfying our customers by the professional design ability and the solid production ability. Since the company established in June, 2003, we have accumulated precious experiences in this field and unceasingly promoted ourselves. In March, 2006, the company expanded and migrated to huangjiang county, Dongguan city, which is famous for its manufacture industry. Near Huangjiang station of Wanshen highway, the transportation there was extremely convenient. Nowadays our company possesses the workshop of approximate 5, 200 square meters, and employs more than 300 high-quality staffs, our products are exported to South Korea, Japan, Southeast Asia.