Part A - Circular to Shareholders in relation to the Proposed Renewal of Existing Shareholders' Mandate for Recurrent Related Party Transactions of a Revenue or Trading Nature and Proposed New Shareholders' Mandate for additional Recurrent Related Party Transactions of a Revenue or Trading Nature Part B - Statement to Shareholders in relation to the Proposed Renewal of Authority for Share Buy-Back for Hengyuan Refining Company Berhad to purchase its own shares