NewMarket Corporation is a holding company. The Company is the parent company of Afton Chemical Corporation (Afton), Ethyl Corporation (Ethyl), NewMarket Services Corporation (NewMarket Services), and NewMarket Development Corporation (NewMarket Development). The Company operates through petroleum additives segment, which is primarily represented by Afton. The Company manufactures chemical components that are selected to perform one or more specific functions and combine those chemicals with other chemicals or components to form additive packages for use in specified end user applications. The petroleum additives product applications include lubricant additives and fuel additives. The Company's All other category includes the operations of the TEL business, as well as contract manufacturing and services performed by Ethyl. The Ethyl plant facility is located in Houston, Texas. It is involved in terminal operations related to TEL and other fuel additives.