Columbian Chemicals Company is a global provider of carbon black additives for rubber, plastic and liquid products. The company has been in business for more than 100 years and is based in Marietta, Ga. Columbian Chemicals Company has more than 1,500 employees in over 10 countries. The company produces a wide range of specialty carbon black grades, specifically designed to meet the needs of plastics, inks and coatings manufacturers. It offers carbon black grades of various makes, such as Columbian s Raven, Conductex and Copeblack. Columbian Chemicals Company is a subsidiary of Phelps Dodge Corp. The company owns and operates more than 10 carbon black manufacturing facilities in Brazil, Canada, England, Germany, Hungary, Italy, Korea, Spain and the United States.