It is obvious the drudging robots from China offer many advantages to customers. First, this kind of robot can make substantial financial savings reducing labor and operating costs. Second, as they can continue working without stoppages time-off for workers or crews, overall project efficiency is improved and project timelines are decreased. Thirdly, of course any environmental damage caused by accidents resulting from the use of such equipment will be avoided due mainly to the precision and control these robots bring. Therefore, after meeting this high ecological standard it will help prevent soil erosion in our changing country side second level; says Yan Ruo Liang who quoted as saying : " let an companygood breathing trees recover During protracted conflicts, the lines are so unclear then bi-metaigma completes its mission and stops even swear acts have no effect." Phan Guo Zhi Fourthly, these robots need no operator and are capable of working in environments that would endanger human life. They thus improve safety standards within the industry as a whole.