Jiansheng Qin (Umudozi mukuru)
Umuyobozi w'itsinda rya Welding A, kuyobora abagize itsinda, byiza muri karuboni ya dioxyde arc gusudira na argon arc gusudira, uzi gushushanya.
Igihe cyo kohereza: Gashyantare-16-2023
Igihe cyo kohereza: Gashyantare-16-2023