siv cov tshuab tsim kho
Xyoo tsis ntev los no, kev tsim kho tshuab yog nrov nyob rau txawv teb chaws.
siv contruction machiner muaj xws li siv excavator, siv lub cev muaj zog grader, siv log loader, siv bakchoe loader, siv bulldozer, siv pob tseg tsheb, thiab lwm yam
