It is a kind of self-propelled machinery which is integrated with shovelling, transporting, lo(omitted)unloading. ... (omitted)kind of engineering machinery. It is a kind of self-propelled machinery which is integrated with shovelling, transporting, lo(omitted)unloading ... role in the national economic building. As a kind of self-propelled engineering machinery, it is involved in many(omitted) fields. ...