Palinso mitundu yambiri ya makina a njerwa pamsika, pakati pawo pali makina a njerwa otchedwa konkire block machine. Koma kodi mukudziwa zozindikiritsa makina oyika njerwa? Kodi mukudziwa zomwe zilembo za nambala ya njerwa zimayimira?
Zida zamakina a block zimakhala ndi kuthekera kwakukulu ku China. Kupambana kokhala Wopanga Makina Opangira Block kumadalira kukhwima kwaukadaulo, mtundu wa zida zamakina a block, kupambana kwa ogwira ntchito, komanso kutsata nzeru.
Ubwino wa mankhwalawa ndi wabwino kwambiri, wogwirizana ndi kufotokozera kwa wogulitsa.Ndizoposa zomwe timayembekezera. Tikuyembekezera mgwirizano wotsatira.