Verified Certificate

Supported by the following organizations

This is to certify that Dong Chen successfully completed and received a passing grade in CDAA1.3x: Preparatory Course for CDAA® 1 a course of study offered by DECx, an online learning initiative of DEC Institute.

Noted by

Prof. Dr. Tim Weingärtner

Prof. Dr. Tim Weingärtner

President DEC Association

Prof. Dr. Philipp Sandner

Prof. Dr. Philipp Sandner

Member of the Board DEC Institute

About edX

edX offers interactive online classes and MOOCs from the world’s best universities, including MIT, Harvard, Berkeley, University of Texas, and many others. edX is a mission driven initiative created by founding partners Harvard and MIT.

About edX Verified Certificates

An edX Verified Certificate signifies that the learner has agreed to abide by the edX honor code and completed all of the required tasks of this course under its guidelines, as well as having their photo ID checked to verify their identity.