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1. Hydraulic cargo lift not only have all safety device of the traditional elevator, but also have the special safety system hereinafter.
2. Spillover valve, it can prevent high pressure when the machine moves up.
3. Manual emergency valve, it can go down to the nearest floor and open the door when you meet an emergency.
4. Manual pump: It can move up the nearest floor and open the door when you meet an emergency.
5. Pipe fracture valve, when the hydraulic system pipe fracture, it can cut down the channel of the oil to stop the falling.
6. Temperature protection, when the temperature of the hydraulic oil is substandard, the machine will stop working until the temperature reverts to the safe standard.
7. Phase lack&phase dislocation protection.
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