(onye na-emepụta ihe njikọ ígwè gburugburu)
Category: ọkwa 8 nna ukwu njikọ, mgbakọ ukwu njikọ, ọdụ ụgbọ mmiri na-ebuli elu, akpa DNV nke dị n'ụsọ osimiri, DNV 2.7-1, EN 12079-2, EN 1677-4, ihie eriri njikọ okirikiri, eriri 8 na-ebuli elu,