Harper Corporation of America is once again a purple sponsor for the 22nd Annual Phoenix Challenge High School Skills Competition, an event that the company has supported since its inception.   The competition brings together high school student teams from across the US to demonstrate their skills in the flexographic process. They spend two of the two-and-a-half-day team event competing in five skill-related tests. They take a math test, the FTA FIRST Level One Operator examination, and a prepre...