Caika Wang Colored Business Card Printing Center, one of the largest colored business card printing bases in Harbin. Relying on the strong printing strength of Harbin Boya Printing Factory, it owns Roland full-size four-color printing press, Heidelberg twin-color printing press, and several auxiliary printing machines. It is the largest printing and colored business card printing base in Harbin area. It is honored as one of the top five printing companies in Harbin.