John Zheng Wang is a full professor of Criminal Justice and Forensic Studies in School of Criminal Justice, Criminology, and Emergency Management at California State University-Long Beach. He also serves as Director and an Instructor for Applied Forensic Sciences & Crime Analysis and High Tech Crime Investigation Certificate Programs at CSULB. In 1982, he started as a crime scene technician and later became an instructor and examiner at China Criminal Police University. From 1988 to 1994, he earned his M.P.A. from Northern Michigan University and doctoral degree from Indiana University of PA. From1996 to1999, Dr. Wang taught as an adjunct instructor for the Huston Police Academy. Since 2009 he has been an expert instructor for California Police Command College (POST). He is a member of American Academy of Forensic Sciences (AAFS), International Association for Identification (IAI), International Association for Identification-CA and American Chemical Society (ASC). Since 2009, he has led a joint educational program annually on Comparative Forensic Sciences in the U.K and Canada. Dr. Wang serves as editorial review members for several journals.

John Zheng Wang's research intrests include: FTIR rapid differentiation of white powders (drugs vs. non-drugs) Determinations of manner, cause, and mechanism of death via pharmaceutical substances Microscopic detection of meth residues at clandestine sites