As transportation infrastructure
presents a very significant gradient from the eastern to the
central, and then to the western regions in China, what's more,
transport infrastructure has a trend of further concentration to
these regions, it probably could aggravate further
differentiation of the manufacturing location. There are many
means measuring industrial agglomeration, in which Lorenz
curve and Gini coefficient is more common. Krugman (1991)
used space Gini coefficient (spatial Gini coefficient) to
measure the degree of concentration on U.S. manufacturing.