Since the second half of 2011, China construction machinery industry gradually into the trough, up to now, still hovering at the bottom of the trough, engineering machinery enterprises, companies are, of course, can't wait for, except for a handful of companies such as xugong, liugong still stick to construction machinery, such as sany, zoomlion, sunvo intelligent enterprise has been in the rest of the industry layout, through diversification of investment, to reverse revenue decline or even losses as soon as possible.