The United States claims to be "state" on wheels, but its infrastructure conditions in recent years has often been criticized, even compared with many emerging economies have also had a notable gap. World economic BBS "global competitiveness report released by the U.S. infrastructure quality was ranked no. 25, less than most of the developed countries and some developing countries. American time magazine, said U.S. infrastructure disrepair, generally deteriorating condition. Ap is that the United States has more than 65000 Bridges "structure is flawed.

Not only America,there are a lot of countries having the problem of infrastructure disrepair.It is not noly a opportunity for construction machinery industry,but also a challenge.Face with this serious competition,how to standout amoung other competitors is the biggest problem for all munufacturers.

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