tushen kogin Masu kera injinan ɗagawa ne tushen kogin sha'anin hadawa samarwa, bincike da ci gaba, masana'antu, da kuma tallace-tallace na tushen kogin dagawa kayan aiki, tushen kogin dagawa inji, tushen kogin dagawa kayan aiki da kuma ayyuka! Amintaccen inganci, fifiko farashin, m bayan- sabis na tallace-tallace, ya cancanci amincewa!