Chifukwa cha zinthu zomwe zili ndi katundu komanso mitengo, matumba olukidwa mabiliyoni 6 amagwiritsidwa ntchito popaka simenti m'dziko langa chaka chilichonse.

kuwerengera zoposa 85% ya zonyamula zambiri za simenti.

Ndi chitukuko ndi kugwiritsa ntchito thumba flexible matumba,

matumba apulasitiki opangidwa ndi nsalu amagwiritsidwa ntchito kwambiri panyanja.

Mayendedwe, kulongedza katundu, mafakitale ndi zaulimi, ndi m'kulongedza zinthu zaulimi,

matumba oluka apulasitiki akhala akugwiritsidwa ntchito kwambiri pakuyika zinthu zam'madzi,

kuyikapo chakudya cha nkhuku, zophimba zopangira minda, zotchingira dzuwa, zotchingira mphepo, makola osalowa matalala ndi zida zina zobzala mbewu.

Zinthu wamba: kudyetsa matumba nsalu, matumba mankhwala nsalu, putty ufa nsalu matumba, urea matumba nsalu, masamba mauna matumba, etc.