1. For purposes of business collaboration, -or- For the purpose of business collaboration, 2. ...company A invites The President Mr. X of the subsidiary B Co.,Ltd. of C *and* The Vice-president Mrs.of subsidiary D Co.,Ltd. of C to visit *the* UK... (You need an "and" in the middle to separate the two people, and you need "the" before "UK".) 3. ...for *a* business trip. (You need to include "a" before "business trip")

No. You've abbreviated it to the point where it's meaningless. There's no context as to what the letters refer to. Your English is awkward too. The purpose? What purpose? 'purposes' is better. Bad spacing... There probably should be an 'and' between the two people, if that's what you mean.