Kuphatikiza pa mfundo zachitsulo, tilinso ndi cholumikizira chosinthika cha mphira, chomwe chimagwiritsidwa ntchito kwambiri pama projekiti oyambira monga makampani opanga mankhwala, zomangamanga, madzi, ngalande, mafuta, mafakitale opepuka komanso olemera, refrigeration, ukhondo, mapaipi, chitetezo chamoto, ndi mphamvu yamagetsi. Accord...
Werengani zambiri