Seling fasaha ce ta gabaɗaya wacce ake buƙata don duk masana'antu, ba kawai gini ba, petrochemical, gini na jirgin ruwa, masana'antar injina, makamashi, sufuri, kariyar muhalli da sauran masana'antu ba za su iya yin ba tare da hatimin fasahar jirgin sama, sararin samaniya da sauran masana'antar yankan-baki ...
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