... steadyDual-cylinder lifting system,more stable and reliableChain-equalization systemSingle manual or e-lock release system,safe and relaibleWear-resistant,heat ... to make sure no oil leakageSolenoid valve has the emergency manual lock release functionOptional 24v control box, solenoid valve and ... , ODM Accepted , OEM AcceptedSafety/Quality Approvals 2.7t Hydraulic double car parking lift EPO606H