NewMarket Corporation (NewMarket) is a holding company and is the parent company of Afton Chemical Corporation (Afton), Ethyl Corporation (Ethyl), NewMarket Services Corporation (NewMarket Services), and NewMarket Development Corporation (NewMarket Development). Each of the Company�s subsidiaries manages its own assets and liabilities. Afton encompasses the petroleum additives business, while Ethyl represents the sale and distribution of tetraethyl lead (TEL) in North America and certain petroleum additives manufacturing operations. NewMarket Development manages the property, which it owns in Richmond, Virginia. NewMarket Services provides administrative services to NewMarket, Afton, Ethyl, and NewMarket Development. The Company operates in petroleum additives, which is represented by Afton. The TEL business of Ethyl is reflected in the All other category.