1.Underground Installation, 3500kgs Lifting Capacity ，When The Machine At Lowest Level It Is Same.With Ground Level And More Working Space. 2. All The Seal Kits Of Cylinder Are Import From Italy ,The Cylinder Import From Taiwan. 3.Extendable Platform For Two Or Single Side Optional,Service For More Cars. 4. Inside Of Cylinder Assy Has The Special Treatment And Make Sure That Is Doesn't T Leak Oil. 5. 24v Control System And Limited Switch. 6. While Switch Is Addedary,It Is Controlled Long Distantly. 7.Ce Tested,120% Dynamic Loading Test And 150% Static Loading Test.