Ndi kuwongolera mochedwa, kuwongolera mmbuyo, kusinthasintha kwa unit unit, kuchotsa zolakwika, kuteteza mawu achinsinsi ndi ntchito zina.Ili ndi mawonekedwe a kukana kugwedezeka kwabwino, moyo wautali, kukana kukakamiza, ndi zina. Ndiwoyenera makamaka makina osindikizira a hydraulic, apamwamba ...
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