It is best to learn the hook machine in the local urban area, because the traffic is not only convenient, but also the cost is not too high. Every city has a special place to learn hook machines.
Hook machine, even excavator, is a kind of machine which integrates the functions of advancing, retreating, rotating, lifting, descending, digging, hydraulic hammer breaking and adsorption. It is an earth-moving machine that uses a bucket to dig out materials higher or lower than the bearing surface, and loads them into transport vehicles or unloads them to the yard.