I-flange engekho semgangathweni

Inkcazelo emfutshane:

Ubungakanani besicelo: I-boiler kunye nesitya soxinzelelo, i-petroleum, imboni yeekhemikhali, ukwakha iinqanawa, ikhemesti, i-metallurgy, oomatshini, i-elbow, ukutya kunye namanye amashishini.