Elevator steel scrapping standard Mfundo zazikuluzikulu zamapangidwe amagetsi mu elevator ndi chipinda cha makina Chipangizo chotetezera chidzayamba pamene elevator ikulemera kwambiri Zofunikira pa chitseko cha elevator ndi chiyani? Kupaka mafuta a elevator ndi zofunikira pakugwira ntchito kwamafuta opaka mafuta Mafunso angapo oti amvetsetse ndi ogwiritsa ntchito chikepe