Zeller Gmelin Corp, 4725 Richmond Hwy, Richmond, VA 23234, US

NewMarket Corporation, located in Richmond, Va., operates Afton Chemical Corporation and Ethyl Corporation. The company develops, manufactures, blends and delivers chemical additives that enhance the performance of petroleum products and lubricating oils and fuels. Ethyl Corporation manufactures diesel cetane improver and gasoline performance additives. The company employs more than 1,100 people at worldwide locations. It additionally offers mechanical, chemical engineering, tribology, sales, organic chemistry, and marketing services and solutions to its clients. The company has a wide range of departments, including audit committee charter, stock options committee and corporate guidelines departments. It also provides terminal storage and distribution services from Houston and Richmond, Va., and Canada, Belgium and Holland.