The customer requirements and PLM functions. After defining the CR categories, the second level of needs, it
is proposed, should be considered as ‘‘customer requirements’’ (what kind of the PLM functions that enterprise
need most?). Finally the third level of needs can be interpreted as ‘‘performance measures or attributes’’
(can the PLM function can totally satisfy customer requirements?). The first matrix shows the
relationship between customer requirements and PLM functions. The items of customer requirements
and PLM functions are determined on the basis of the knowledge and experience of experts who are skilled
in the design of the object being developed.