1. Nooca kicinta: Platinum, palladium, rhodium, iyo biraha kale ee qaaliga ah iyo curiyayaasha dhulka naadirka ah ee kiciya dhismaha.
2. Substrate Kataliye: Substrate dhoobada malabka, substrate bir ah.
3. Daahan heer sare ah oo loogu talagalay waxqabadka catalytic adag, waara oo xasilloon.
4. Tiknoolajiyada horumarsan iyo sidayaal farsamooyinka baakadaha si loo hubiyo shoogga kulaylka la isku halayn karo iyo xasilloonida farsamada.
5. Kala duwanaansho, qeexid dhammaystiran, shuruudaha macaamiisha waxaana laga yaabaa inay ku salaysan yihiin cabbirro farsamo si loo waafajiyo baahiyaha kala duwan ee macmiilka.
6.Waxay la kulmi kartaa Euro3,Euro4,Euro5 ama CARB, heerka EPA.