“…Most of them have focused on the distribution of HQ among different cities (Bel & Fageda, 2008;Klier, 2006;Meyer & Green, 2003;Pan & Xia, 2014;Rice, 2010;Rice & Lyons, 2010;Tonts & Taylor, 2011, 2010. Theoretical and empirical research suggests that HQ are highly agglomerated in metropolitan areas in western countries (Davis & Henderson, 2008;Henderson & Ono, 2008;Lovely, Rosenthal, & Sharma, 2005;Strauss-Kahn & Vives, 2009).…”