[PETROCHINA COMPANY LIMITED (a joint stock limited company incorporated in the People’s Republic of China with limited liability) (Stock Code: 857) RESIGNATION OF CHAIRMAN AND DIRECTOR Board Company The board of directors (the “ Mr. Jiang has confirmed that he has no disagreement with the Company and the Board and is not aware of any other matters that need to] [99.1 Announcement dated March 18, 2013 relating to the resignation of the Chairman of the Company. PetroChina Company Limited Dated: March 18, 2013]