Of that has to work in Nonthaburi, Thailand Post branches problem occurs is when there are many products to make a mistake in the separation. Since storage space is limited, Students learn concepts and theories optimized to work better by bringing technical thinking how to improve ECRS using the S is to simplify and control the visibility Visual Control to improve by. a sign that the separator material. Can help reduce errors in the separation and reduce the time it takes one minute to 30 seconds, down to 50% and crash down from five times to 2 times the figure is 60%.