Neste Corporation (Finnish: Neste Oyj, until 1 July 2015 Neste Oil) is an oil refining and marketing company located in Espoo, Finland. It produces, refines and markets oil products and provides engineering services, as well as licensing production technologies. Neste has operations in 14 countries.Neste has petroleum refineries, at Porvoo and Naantali in Finland, and two renewable diesel refineries, in Singapore and in Rotterdam, Netherlands. The Porvoo site also produces renewable diesel.