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Qintuo Industry Group has registered capital RMB360 million and 12 owned and holding subsidiaries at mainland of China and abroad with the headquarters located in Hongkong of China, Qintuo Industry Group has the largest research and development team, more than 300 professionals, spent nearly RMB100 million each year on science and technology innovation and patent technology development

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Acknowledgements This work was supported by the National Natural Science Foundation of China (30600661, 30872708, 30801174, 30871191 and 30900622), the Scientific Research Foundation of the Health Bureau of Hunan Province (B2007058), the Natural Science Foundation of Hunan Province (05C0163) and the Post-doctorate Scientific Research Special-purpose Project of Hunan Province (2008RS4012)

doi:10.1038/nrn1826