Circulars - [Re-election or Appointment of Director subject to Shareholders' Approval / Explanatory Statement for Repurchase of Shares / General Mandate / Amendment of Constitutional Documents] PROPOSED RE-ELECTION OF RETIRING DIRECTORS AND PROPOSED GRANTING OF GENERAL MANDATES TO BUY BACK SHARES AND TO ISSUE SHARES AND PROPOSED AMENDMENTS TO ARTICLES OF ASSOCIATION AND NOTICE OF ANNUAL GENERAL MEETING