1. Equipped with 2nd lift, good synchronism 2. Accurate horizontal plane, convenient for high-precision four-wheel localization 3. Easy, quick tire disassembling and chassis repairing 4. Equipped with self-locking and anti-explosion devices, safe and reliable 5. Imported hydraulic, pneumatic and electric devices ensure running smoothly 6. Static powder coating , durable, anti-corrosion.