Dị ka ngwá ọrụ nhazi dị mkpa na ụlọ ọrụ ọgbara ọhụrụ, a na-eji ngwá ọrụ ịgbado ọkụ n'ọtụtụ ebe na ụlọ ọrụ agha, ikuku ikuku, ụgbọ mmiri mmiri, ụgbọ mmiri nrụgide, pipeline engineering, petrochemical engineering, engineering machinery, electric power engineering, ewu, ígwè Ọdịdị, automobil ...
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