Features: 1) With concealing structure for the two levels and superior 2) Lift level can be adjusted to high precision 3) Easy for mount and dismount of tires, and chassis maintenance 4) The position of the front wheel turntable (optional part) is movable so that the side slide plate can be fit for more cars 5) The pneumatic double-teeth self-locking system and the anti explosive pipe insurance structure are automatically open 6) Sliding block is made of oil-free anti-friction materials 7) Foreign hydraulic, pneumatic and electrical components