Shenzhen Sage Human Elec. Co., Ltd is a manufacturer of Car Mp3 players, FM transmitters and portable speakers. Having been engaged in digital lines since 2004, we've invested heavily in R&D and mass production, making good achievements. We have gained righ experience in cost management, quality control and after-sales service, allowing us to get the opportunities to cooperate with many IT distributors, wholesalers, brokers and promotional gift importers and our clients spread all over the ...