Intsimbi engagqwaliyo engu-1.201 ifanelekile ukusetyenziswa kwindawo eyomileyo kwaye kulula ukuyigqwala xa imanzi.
I-2.304 intsimbi engagqwaliyo, ifanelekile kwindawo engaphandle okanye efumileyo, enokumelana nokugqwala okunamandla kunye ne-asidi.
I-3.316 intsimbi engagqwaliyo, i-molybdenum yongezwe, ukumelana nokugqwala ngakumbi kunye nokumelana nokugqwala kwemingxuma, ifanelekile ngakumbi kumanzi olwandle okanye kwiikhemikhali.
Ixesha lokuthumela: Okthobha-27-2021