Final Investment Decision for the Development of Vietnam Block B Gas Field

Mitsui & Co., Ltd. ("Mitsui", Head Office: Tokyo, President and CEO: Kenichi Hori), through its wholly owned subsidiary Mitsui Oil Exploration Co., Ltd. ("MOECO"), has made a final investment decision and concluded related contracts together with its business partners regarding an integrated development project ("Block B Project") encompassing an upstream gas field and a pipeline linking it to a gas-fired thermal power plant complex, on March 28 (Vietnam time). The business partners include the Vietnam Oil and Gas Group ("PVN"), a Vietnamese national oil and gas company, PetroVietnam Exploration Production Corporation Limited ("PVEP"), PetroVietnam Gas Joint Stock Corporation ("PV Gas"), and PTT Exploration and Production Public Company Limited ("PTTEP"), a Thai national oil and gas company.