Complex sentence: It specialises in Android tablet computers, MP3 players, MP4 players, Digital photo frames etc. Ainol is a brand of digital products but the company also offers OEM production under other brand names.
Split into simpler sentences: It specialises in Android tablet computers, MP3 players, MP4 players and Digital photo frames. The company principally sells its products under the Ainol brand, but also offers OEM production under other brand names.