Chidziwitso cha Hollow Block ManufacturingHollow block kupanga ndi njira yovuta kwambiri pantchito yomanga, yopereka zida zomangira zofunika pamitundu yosiyanasiyana. Njirayi imaphatikizapo magawo angapo, kuchokera pakupeza r
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?