Ngenxa yokuguquguquka kwamanani entengo yezinto zokusetshenziswa kanye nokukhathazeka kwemvelo, abadlali abakhulu emakethe ye-carbon black market bebelokhu benyusa amanani entengo yomkhiqizo kusukela ngo-2016. Isicelo esiyinhloko se-carbon black (ngaphezulu kuka-90% wokusetshenziswa okuphelele) njenge-ejenti eqinisayo isondo nerabha umkhiqizo...
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