Endless Ideas is the company that markets the BeBook (
Wiki: BeBook). Generally its hardware and software is from Jinke, which uses the generic brand name Hanlin for its ebook readers (e.g. the Hanlin V3 is also the BeBook and the EZ Reader). The BeBook Mini is a Hanlin V5, but it isn't clear if the BeBook2 is also from Jinke or if it is a BeBook exclusive.
The existing BeBook reads PDF and ePub, but only if they are DRM-free. It does not read eReader ebooks at all. The only DRM format it supports is MobiPocket (MOBI or PRC). These are available from many stores.