NewMarket Corporation is a holding company operating through its subsidiaries, Afton Chemical Corporation (Afton), Ethyl Corporation (Ethyl), American Pacific Corporation (AMPAC) and Calca Solutions, LLC (Calca). The Afton and Ethyl companies develop, manufacture, blend, and deliver chemical additives that enhance the performance of petroleum products. AMPAC is a manufacturer of specialty materials used in solid rocket motors for the aerospace and defense industries. Calca is a producer of UltraPure and high-purity hydrazine – essential, mission-critical propellants that enable advanced aerospace and defense applications. Its petroleum additives segment includes lubricant and fuel additives. Its specialty materials segment includes critical materials used in solid rocket motors for space launch and military defense applications as well as propellants that enable advanced aerospace and defense applications that are integral to in-space propulsion systems for satellites and space probes.