GBL Gül Biology Laboratory, founded in 1990 by Dr. Sait Hulusi Özbudun, is one of Turkey's oldest and well-established companies in the medical field, producing and exporting GMP, ISO 13485: 2016 and ISO 9001: 2015 certified medical device disinfectants and biocidal products since 1998, whose shares have been owned by the same family since its foundation.