Identify the following quality control activities as either value-added or non-value-added. a.Value-added b.Non-value-added 130.Scrap material 131.Processing returned materials ...

Identify the following quality control activities as either value-added or non-value-added.

a.Value-added

b.Non-value-added

130.Scrap material

131.Processing returned materials

132.Rework

133.Finished goods inspection

134.Preventive machine maintenance

135.Customer service calls

136.Design engineering

137.Materials inspection