Kireni yaing'ono yam'manja yomanga ndi ntchito yabwino kwambiri, kugwiritsa ntchito makina ang'onoang'ono ndi zida zosiyanasiyana.Crane yapanja iyi imatha kugwiritsidwa ntchito poletsa madzi padenga, kuthira konkriti, yomwe imagwiritsidwa ntchito kwambiri m'makampani okongoletsa, makampani oyika, magulu ogwirira ntchito, makampani osuntha, magulu omanga ndi zina zotero.Kireni yam'manja yam'manja ndi yaying'ono, yopepuka, yothamanga kwambiri, yachangu, yosavuta kuyiyika, imasewera yayikulu, yosavuta kugwiritsa ntchito, yogwira ntchito kwambiri.