... .CE certificate 2. Used in household,office building,parking lots etc 3. Columns can be shared more ... it is fitted underground.Hydraulic direct driveThe column uses N+1 type,strongly interchange character,more parking space,more ... chain or bridge at the entrance&exit of the lift,convenient for driving in and out.PLC control ... ODM Accepted , OEM AcceptedSafety/Quality Approvals 2 cars parking lift