Lesson 1: don't trust the Chinese. Lesson 2: they will stab you in the back (see Lesson 1). But GE, thought to be a well-run company, apparently doesn't know: GE to Share Jet Technology with China
Name one - any - company that is happy with their joint development efforts with China. Name one that hasn't had their technology boldly ripped off? Name one who has made money in the long run.