PUBLIC COMPANY LIMITED PTT EXPLORATION AND PRODUCTION PUBLIC COMPANY LIMITED PTT GLOBAL CHEMICAL PUBLIC COMPANY LIMITED PTT OIL AND RETAIL BUSINESS PUBLIC COMPANY LIMITED PTT PUBLIC COMPANY LIMITED PTTEP

CHEMICAL PUBLIC COMPANY LIMITED PTT EXPLORATION AND PRODUCTION PUBLIC ... PTT GLOBAL CHEMICAL PUBLIC COMPANY LIM... PTT PUBLIC COMPANY LIMITED PTTEP AUSTRALIA INTERNATIONAL FINANCE ... PTTEP TREASURY CENTER

Annual Report 2010 ANN UAL REPORT 2010 SECURITIES AND EXCHANGE COMMISSION, THAILAND ASEAN ECONOMIC COM MUN ITY Vision S = Setting High Standard E = Ethical C = Committed Pro = Professional Mission

increase efficiency and enhance competitiveness. Steps to be taken involve: demutualizing the SET, transforming it into a public limited company, separating exchange business (Exchange Company: EXCO) from