Kev Tsim Kho Qib Iron oxide pigments Pigments muaj cov yam ntxwv ntawm cov xim zoo sib xws ntawm txhua qhov ntau;zoo dispersibility hauv cov khoom cement;muaj zog huab cua tiv taus, tuaj yeem tiv thaiv cov khoom siv los ntawm kev puas tsuaj;muaj zog tinting zog;thiab tus nqi pheej yig.