Lub tshuab tso pa yog tsim los ntawm cov yeeb nkab tso pa, muffler, catalyst converter thiab lwm yam khoom siv.Feem ntau, cov yeeb nkab tso tawm ntawm cov tsheb lag luam loj feem ntau yog ua los ntawm cov yeeb nkab hlau, tab sis nws yooj yim rau oxidize thiab xeb nyob rau hauv qhov rov ua dua ntawm qhov kub thiab txias ...
Nyeem ntxiv