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.
Chifukwa cha mgwirizano wathunthu ndi chithandizo cha gulu lokonzekera polojekitiyi, polojekiti ikupita molingana ndi nthawi ndi zofunikira, ndipo kukhazikitsidwa kwatsirizidwa bwino ndikukhazikitsidwa! .