... , low noise, ultraviolet-protection glass, and with Curtis (of USA) or VDO (of Germany) instrument panel, height-adjustable seat, radio, ashtray ... levelling unit It is optional to select Topcom leveling unit or MOBA leveling system (Both are imported).It is recommended: ... ways; and laser leveling unit as the optional for building airport or large-area agricutural site.3,Front dozer4,Rear rippers XCMG ...