 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 nihu usoro ala mkpuchi usoro, butere na mma Products . 