Doyoung, Jaehyun, and Jungwoo, members of boy group NCT, will debut as a trio in new unit, NCT DOJAEJUNG, next month, with the release of mini-album 'Perfume.' NCT's new unit The name is derived from the first syllable of each member’s name; 'Do' from Doyoung, 'Jae; from Jaehyun, and 'Jung' from Jungwoo. NCT…