Modeling and Analysis of Material Flows in Re-Entrant Supply Chain Networks Using Modified Partial Differential Equations

Table 1

Processing time of the product D at each step.

Machining centers	Processing time (hours)
Machines A & B	Step 1: 1.5	Step 5: 1.5
Machines C & D	Step 2: 0.5	Step 4: 1
Machine E	Step 3: 1	Step 6: 0.5