Dongguan Koppo Electronics Co.Ltd is a professional bluetooth headphone manufacturer engaged in the design, tooling, manufacturing and sales of acoustic products;With strong R&D team, we could meet your OEM/ODM requests and orders;Our products are RoHS, CE, FCC and BQB certified and have applied patent for outer shape, and have been exported to more than 30 countries overseas.We assist our client in protecting their local market to get a win-win solutio