1. ʻAno Catalyst: Platinum, palladium, rhodium, a me nā metala makamae ʻē aʻe a me nā mea o ka honua laha ʻole o ka mea hoʻohuihui.
2. Kāpena Catalyst: Honeycomb ceramic substrate, metala pani.
3. ʻO ka uhi maikaʻi no ka hana catalytic paʻa, mau a paʻa.
4. ʻO nā mea lawe ʻenehana kiʻekiʻe a me nā ʻenehana paʻi e hōʻoia i ka haʻalulu wela a me ka paʻa mechanical.
5. Nā ʻano like ʻole, nā kikoʻī piha, nā koi o ka mea kūʻai aku a hiki ke hoʻokumu ʻia i nā ʻenehana loea no ka hoʻohālikelike ʻana i nā pono o ka mea kūʻai aku.
6. Hiki ke hui i ka Euro3, Euro4, Euro5 a i ʻole CARB, EPA maʻamau.