Kuthekera kwa kukula kwamakampani : Ndi chitukuko chosalekeza cha makampani omanga zombo muzomangamanga, chitetezo cha chilengedwe, ndi bolodi la silicate la calcium monga chinthu chatsopano choteteza chilengedwe, chalandira chidwi chochulukirapo. Kuthekera kwakukula kwamakampani ndi kwakukulu, ndipo bolodi la silicate la calcium likuyembekezeka kugwiritsidwa ntchito kwambiri