Mr. Chang Hwan Kim graduated from the College of Dental Technology at Kwangju Health University in 1985. He, then worked with numerous clinicians and technicians and his knowledge and skill became further refined. In 1999, Mr. Kim was awarded with the Grand Prize at Korean Dental Technician’s Competition. He co-authored a textbook for dental technicians called Bio functional Prosthetic System in 2003. He published another book, Esthetic Harmony in 2007.He published another book, Passion &Esthetics in 2009. He is currently a director at Changhwan Kim  ART Center.