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.
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?
Mipiringidzo ya konkriti imagwiritsidwa ntchito makamaka kudzaza mawonekedwe apamwamba a nyumbayo, chifukwa cha kupepuka kwake, kutsekereza mawu, mphamvu yabwino yotchinjiriza, ogwiritsa ntchito ambiri amakhulupirira ndi kukondedwa. Zopangira zake ndi monga mvuvu: Simenti: simenti acts a