Isikhokelo esiBanzi kwiFayibha eQiniswayo noYilo lweMixube yeConcrete
(ifayibha eyomeleziweyo umxube wekhonkrithi) Ukuqonda iFayibha Eyongeziweyo Umxube weConcrete: Iingenelo, Imveliso, kunye neZicelo zeNkcazelo yeMeta: Phonononga iingenelo, inkqubo yemveliso,…