Agba agba agba nwere mkpụrụ osisi platelet, wee kpuchie ya (a) oyi akwa dị n'akụkụ mkpụrụ nke oyi akwa bụ oyi akwa metal oxide nke nwere otu ma ọ bụ karịa nke Ce, Sn ma ọ bụ Fe oxides, na ebe pigmenti nwere otu ma ọ bụ Ntụgharị nke metal oxide layers nke Sn na-esote Ti, ma ọ bụ (b) otu oyi akwa nke Sn oxide na n'ime ya Ti oxide, unit ahụ kwughachiri otu ugboro ma ọ bụ karịa.