The agba ntekwasa ígwè efere ka nke oyi-akpọrepu ígwè efere na galvanized ígwè efere dị ka a mkpụrụ, doro elu pretreatment (degreasing, nhicha, chemical akakabarede ọgwụgwọ), ntekwasa site a na-aga n'ihu usoro (ala mkpuchi usoro), butere na mma Products .
