... we frequently load and unload goods, including the factory warehouses with a variety of vehicle models, railway ... vavle and press the handl to move the ramp over the truck soleplate. Unfold the landing legs ... the afterbody of the truck, then fasten the ramp and the truck with the chain. The hydraulic ... operation finishes, untie the fixing chains. Lifting the ramp by the handle stick, and then drive out ...