“…1 The agglomeration of industrial activities has signi…cant impacts on …rm behavior and …rm performance such as productivity (e.g., Ciccone and Hall, 1996;Henderson, 2003), organization of production processes (e.g., Holmes, 1999;Li and Lu, 2009), and innovation (e.g., Feldman and Audretsch, 1999;Carlino, Chatterjee, and Hunt, 2007).…”