1. Awoodda kuleylka kuleylka way ka duwan tahay; block dhululubo daahan ayaa kala daadinta kulaylka wanaagsan, iyo maaddadu waa birta daawaha hoose, kaas oo lagu buufiyo in gidaarka gudaha ee godka aluminium daawaha aluminium by buufin plasma ama hababka kale ee buufinta. Ku habboon matoorada la xoojiyay iyo kuwa kuleylka sarreeya;

2. Awoodda saliidayntu way kala duwan tahay; qaab-dhismeedka dusha sare iyo waxqabadka xayndaabyada daboolan waxay ka duwan yihiin kuwa birta ah ee birta ah, iyo waxqabadka xannibaadda dhoobada ayaa la bedeli karaa iyada oo la beddelo alaabta daahan;

3. Naqshadaynta xannibaadda dhululubada way ka duwan tahay; Masaafada dhexe ee mashiinka mashiinka leh xargaha silsiladaha looma qaabeyn karo inuu yaraado, sababtoo ah waxay xaddidan tahay dhumucda xargaha silsiladda;

4. Kharashku wuu kala duwan yahay; dhululubada dahaarka ah ayaa aad qaali u ah oo geeddi-socodka waa mid adag;