With the semiconductor technology node advanced to 5nm and beyond, chemical suppliers are facing challenges not just to produce cleaner chemicals with lower contaminations, but also need to identify those factors to cause unknown impact with new wider applications of current bulk chemicals. The efforts include thorough understanding of current specification, theory of chemical production process, production technique, equipment, handling, and precise chemical analysis. As result, we can Identify customer’s applications to refine analysis technique or even development of new test method. K-PPC has focused on “finger-printing” of wet process bulk chemicals by close cooperation with customers and makers to solve issues and enhance quality management beyond existed ways. At the end, we can establish this new method of specification definition for the implementation of future advanced technology node.