Cov tub yees semi - Cov shocks yog nruab nrog cov tub yees rau cov tub yees tshwj xeeb, ua kom muaj qhov zoo tshaj plaws rau kev thauj Green Pass Canpo. Cov yam ntxwv tseem ceeb suav nrog:
1. Cov rwb thaiv tsev zoo: semi-} techers siv cov khoom siv siab siab tseem ceeb tseem ruaj khov rau hauv cov teeb meem.
2. Loj thauj khoom muaj peev xwm: semi- Trailer's chaw thau khoom, ua kom nws thauj khoom loj dua ntawm ib zaug, txhim kho kev nqa khoom
3. Ceev cov chaw thau khoom thiab thau khoom: tub yees txias ({1}} cov shocks yog feem ntau npaj cov khoom siv yooj yim thiab kev thauj khoom sai thiab tsis tuaj yeem siv sijhawm, txo lub sijhawm siv sijhawm.
