To be able to see the whole flow of activities and to
quickly discover where there is room for improvement
some form of method to visualize the refining process is
needed. In VSM work done on drawing a map of the
information and material flows that are the essential parts
of the production system. Purpose of VSM is to highlight
sources of waste and eliminate them by implementing the
future state value stream that can become a reality within a
short period of time. (Daniel Hogfeldt, 2005).