There were quite a few CW-21 aircraft that were captured unassembled (about 27) when the Japanese over-ran the Loiwing factory.
There were also several Dutch CW-21 aircraft of 2-VLG IV that had been damaged on the ground and one intact CW-21B subsequently captured and used as a liaison aircraft. This is the one that is seen in the photo of the captured B-17 at the IJA test center in Singapore.
The Japanese also actively operated the captured Dutch CW-22s.