Abubuwan da ake buƙata don ƙirar ƙirar da samarwa sune: daidaitaccen girman, farfajiya mai laushi; tsari mai ma'ana, ingantaccen samarwa, mai sauƙin sarrafa kansa; saukin masana'anta, rayuwa mai tsada, mara tsada; zane yana biyan bukatun tsari, tattalin arziki da ma'ana.
Designirƙirari shine babban maɓalli a cikin samar da kyawun ƙira, matakin farko na samarwa, kuma yana sarrafa dukkan ayyukan samarwa. Sabili da haka, ƙirar tana da babban tasiri ga rayuwar sabis na mold. Designirƙirar galibi ta shafi rayuwar sabis na matattarar ƙyamare daga abubuwan biyu masu zuwa.
Saboda ana amfani da zanen inuwa daban daban a fannoni da dama, kuma fasahar kere kere ta kwararru ta kuma samu wasu canje-canje da ci gaban da aka samu a wadannan shekarun, a wannan bangare, an tsara abubuwan da aka kirkira na kayan maye wadanda suka mutu.