Who is Shenzhen Rongyu Technology Co. Ltd? We are the world&＃039;s OEM&ODM electronic products resource! -MP3/ MP4/Power Bank/Mini speaker&MID. Profession: with over decade manufacturing and exporting experience, we are engaged in developing technologies, products and services a comprehensive range of electronic products services Certification: ISO, CE, FCC, UL and RoHS. Service: OEM: Our workers are well trained and our products are under strict quality control system. Highly efficient and cost-effective OEM product is what we are producing for you! ODM: Owning a great research and development team and a well managed resource network, we are qualified to design new products to support different customers’ needs.. Production capability: Take MP3 as example, 500, 000 units monthly. Customer reference: DISNEY, DHL, FEDEX, BARBIE, etc. Our history and experience is rich. Our future is dynamic. We are SZ RONGYU and the spirit of invention is what drives us. Get Win-Win cooperation with us now!