Jalony marwa

Wayudo ISO9011 mar rito chenro mar rito ber mar piny mangima, oboke mar API 5L, 5T, kod 5B oboke mag gik ma itiyogo, ISO14011) yudo oboke mar rito pinywa kod GB201), thieth mar rito gik moko kod lach mar rito ler mar yore mag rito gik moko. laisens.