Changsha has built more than 80 state-level platforms in the field of construction machinery from theoretical and applied research, engineering research, production technology development to experimental testing, which have made a series of international and domestic leading scientific and technological achievements, and formed a relatively complete industrial scientific and technological innovation chain. Changsha has initially formed an emergency industrial cluster led by leading enterprises and accelerated development of small and medium-sized enterprises. It has gathered leading domestic and international backbone enterprises in construction machinery industry such as Zoomlion, Sany, CRCHI, Sunward, Zoomlion Firefighting Machinery Co., Ltd., Great Wall Information, TALKWEB and Yonker Environmental Protection Co., Ltd., etc. It has cultivated numerous small and medium-sized enterprises with strong innovation ability, good market prospect and great development potential, such as Zhongsen Communication, bynav, and so on.