The relationships of the departments are analyzed as taking the flow of products
in the factory. It is given in Table 1 as a from-to chart which shows the number of
products transferred between departments. From-To chart is the most helpful tool used
in the analysis of material handling related to facility layout. The bigger values refer to
higher relationships. Therefore, the relations are coded in letters. A shows “absolutely
necessary”, E is used for “especially important, and I refers to “Important”.