Low Platform I Need To Help Me Know How Is Called The Sistem To Carry Cars, Which Rises And Low The Platform?

I need to help me know how is called the sistem to carry cars, which rises and low the platform? - low platform

I need to help me know how you call this type of system for car carriers. I have a truck and want a platform for the crane and equipment do I need the pump, pistons and platform. I want to help me to know her name and where you get used to this kind in the U.S., I have no budget deal, if possible, give me websites.