Isn't the SOP to 'borrow' one aircraft for a couple of weeks, return it (with all the tolerances mysteriously altered) and then proceed to build a local knock-off?
I remember Bell Helicopter pulled no punches back in 2007 when it described its fury at having been used by its one-time 430 fuselage supplier Hafei Aviation (now part of Avicopter) as an unpaid training college. Something along the lines of the Bell CEO noticing that there was a completely different group of technicians working on the fuselages each time he visited the Chinese plant...
I/C