"Lean concept" is becoming well-known in the current business. Lean principles help any business to get rid of waste running a business activities. By eliminating waste, companies can gain more profitable, flexible, and controllable within the processes. The word "waste" in lean concept is including everything that makes the procedure flow unsmooth. You will find 7 wastes in TPS, that are waiting time, excess inventory, defect, over production, waste in process, useless..