Abstract
The queuing system is considered where two sorts of stores are classified according to the fact that information of proceeding customers in the store is supplied or not and every customer has his choice of the two. The informaiotn factor ascertained to exercise much effect on agglomeration economy based on the cluster of stores thorgh the mathematical analysis and pseudo-experiment of choice behavior. In addition there are some discussions about the location of the parent plants and their sub-contract plants.
