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DuPont has used WES in its Polymers division since 1987, and their managers have stated it is the most efficient and dependable system in the industry. WES has been continually updated to support many of the industry's best practices. Kenco's managers frequently provide advice to the I.T. staff on refinements in order to optimize efficiency in the completion of tasks controlled by the software. The software attempts to minimize travel time wherever possible, as warehouse travel time accounts for over 60% of the cost of warehouse labor.
When used in conjunction with a completely RF directed warehouse, WES has been shown to deliver productivity increases ranging from 25% to 40%, as compared to non RF directed warehouses. Seamless interface with corporate systems worldwide, five years with zero shipping errors, manpower savings in excess of one million dollars per year, and 10 years of near perfect inventory accuracy (99.9985%) have given DuPont a competitive advantage. | 
