PROPOSED GRANT OF GENERAL MANDATES TO ISSUE AND BUY BACK SHARES; PROPOSED RE-ELECTION OF RETIRING DIRECTOR AND CONTINUOUS APPOINTMENT OF INDEPENDENT NON-EXECUTIVE DIRECTORS SERVING MORE THAN NINE YEARS; PROPOSED RE-APPOINTMENT OF AUDITOR; PROPOSED TERMINATION OF EXISTING SHARE OPTION SCHEME AND ADOPTION OF NEW SHARE OPTION SCHEME; AND NOTICE OF ANNUAL GENERAL MEETING