Pick one category for the following text. The options are - company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work. Afton Chemical - Afton Chemical Corporation is a subsidiary of NewMarket Corporation (NYSE: NEU) an American holding company specializing in performance specialty chemicals.Afton Chemical Corporation develops and manufactures petroleum additives. The company has regional offices located in Asia Pacific EMEAI Latin America and North America. Afton Chemical Corporation is headquartered in Richmond Virginia.
A:
Company