1. Galvanized ígwè ọkpọkọ: ọ na-welded na-ekpo ọkụ itinye mkpuchi ma ọ bụ electrogalvanized mkpuchi n'elu.Ọnụ ego dị ọnụ ala, ike n'ibu dị elu, ma dị mfe nchara, mgbidi tube dị mfe na nje bacteria, obere ọrụ ndụ.Galvanized ígwè anwụrụ ọtụtụ-eji na electric p ...
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