Shunyi digital is your best OEM partners. Including USB flash disk series, mp3 series, mp4 series,hdd player and etc. We supply MP3 ,MP4 with good quality and low price.We always put credit in the first place and cooperate with many world-famous companies in technology to keep in line with the international trends. What you want is what we offer! Your success is our satisfaction! All the members of the company welcome foreign friends to cooperate with us warmly and sincerely!