MANILA, Philippines - President Aquino has appointed six new directors for the Philippine National Oil Co.-Shipping and Transport Corp. (PSTC) who will serve until next year, Deputy Presidential Spokesperson Abigail Valte announced during a radio interview over dzRB Radyo ng Bayan on Saturday. They are Rogelio M. Guadalquiver, Potenciano V. Larrazabal Jr., Nicanor L. Sering, Democrito C. Barcenas, Bob D. Gothong, and Victor S. Ziga. They will serve at the PSTC board until June 30, 2013. Last year, President Aquino appointed Democrito Barcenas as director and Enrique S. Manalang as president/CEO of PSTC.