Kuti uvandudze kushanda kwekongiri, kusimba kwesimba uye kuderera kwekuchengetedza kukosha, kongiri zvinomera zvinowanzowedzera admixture.Kune mhando dzakawanda: mvura inodzikisa mumiririri, inopomba, kongiri retarder, defoamer, accelerator, isingapinde mvura, air entraining agent, antifreeze agent etc. Mhando dzese ...
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