Echo was deng's original brand. (addition:): He also sold components alongside the Echo frames under the name of Adamant, which he later started making frames and other stuff under. Then he created Zoo, which was his low budget line of frames. He started out with a copy of a Koxx Levelboss 26", and a copy of the Monty X-Lite. Frames were called Boa and Lynx, but I can't remember which was which. I think the Boa was the 26". Then he made a half-assed copy of the Coustellier frame called the Pitbull, which has evolved into something not as coust-esque. The release of the Pitbull made the Coustelliers very angry, and they nearly sued. Then after selling loads of zoo and echo frames, deng released a boatload of companies, as mentioned, gu, czar, etc...