Maddak Inc. is a subsidiary of Bel-Art Products. Bel-Art Products, founded in 1946, is a leading manufacturer of products for use in the laboratory and also serves the industrial, safety, educational science and packaging markets. The Bel-Art product line is marketed under the Scienceware trade name.
Sunstar Americas Inc
Chicago-based Sunstar Americas, Inc., (formerly, John O. Butler Company) is a member of the Sunstar Group of companies, a global organization headquartered in Switzerland that serves oral health care professionals and consumers in 90 countries around the world.