ndi hydrotreating.
Zamtsogolo zamalonda
Chogulitsidwacho ndi cholimba chosanunkha pakakhala kutentha kozungulira, chimatha kusungunuka ndikutentha.
Chogulitsidwacho ndi choyaka moto, chotsika cha matenthedwe amagetsi ndi magetsi komanso chinyezi cholimba