Hmmmm - having a quick look the specs are exactly the same and the programming looks very similar - though there are slight differences, perhaps it is a customised version
link to Gaui doc download on this page
http://eng.gaui.com.tw/d981119/html/...iew.asp?sn=884
link to Hobbyking spec on this page
http://www.hobbywing.com/english/Art...?ArticleID=442
Mike