MP3, MP4, GPS, USB - Where does it all come from?

From time to time someone contacts me because they think I sell MP3 players. Actually I don't but I recently came across a young lady who works for a company that does manufacture these items, along with MP4 players, USB items, digital photo frames, GPS units and so on. So, if you're looking for this type of technology in bulk contact Sandy Zhang via her company's website - http://www.taiwantrade.com.tv/honlitw