Iyonti yezincwadiKuyiyo yezincwadi ezincane, enikezwa kwi-industries zokupaka, inkampani yokupaka, i-rubber, njengemboni yokunciphisa, i-glass, i-gem, i-metal polishing agent, kungaba yinkampani yokuphakama yezincwadi.

Iyonti yezincwadiIgama elifanayo liyintathu yezincwadi, i-iron oxide, i-brown iron ore, i-brown soil, i-iron oxide, i-red, i-red powder, i-Venice red (isikhathi esilandelayo siboniswa njengamanzi yezincwadi). Iyayoyeka kwi-hydrochloric acid, njengomphumela.