Thank you for sharing your comments. Turner Construction does not list Potala Tower as a project of theirs.
http://www.skyscrapercenter.com/company/1715
Even if they were involved to a very small degree, or are providing engineers, it amazes me that Turner would allow the use of their branding advertised as "the construction company" for Potala Towers
It is all over the Chinese Advertising for Investors as one of the main attributes.
And PCL or Dargey's own company, AMDO, is never mentioned.