Hydraulic ram is a very useful equipment in rescue operation, when traffic accident occurs, many parts will be out of shape, like the bonnet, door, top ceiling, centre panel and so on, it will bring more difficult for the rescue operation, so when it happened, hydraulic ram will be necessary, because hydraulic spreader is limited by the distance. Hydraulic ram has a longer lifting distance, hydraulic ram CD-F is 2-stage telescope ram, the Max lifting force can up to 21 T, lifting height can up to 1275 mm. How to use the hydraulic ram? or how to extricate by hydraulic ram? When the top ceiling is out of shape, it can expand the space of the vehicle, when the driver or people are stuck under the centre panel, it can lifting the centre panel and then the people can escape from the vehicles.