Invasion!

The meeting on the site for new laboratory construction would be held with attendance with related companies today. Unexpectedly the engineer from outside attends, that's my son's sense. He has some tendency to invite another dealers easily without my permission?
He dose so the relation with our conventional dealing would be destroyed and causes confusing not a little, his ideas lacks deeper consideration on this point.
The point I want on him is just a lay out of working space only, all the designing of our new laboratory would be done by ourselves, so no good reason exists to invade our dealing this time.

Additionally, no unnecessary device nor equipment would be introduced this time, just a movement of working place only, that is completely different from newly opening the place!
We have established our own dealing relations with our several dealers for 24 years, so new another business chance never exists for outsiders, also no intentions to change supplier into another one. Please give up this time, no business chance!