RELATIONS WITH THE MAJOR SHAREHOLDER’S BUSINESS GROUPS GC is part of the Petrochemicals and Refining Business Group under the Downstream Petroleum Business Group of PTT Public Company Limited, as shown in the charts below, which show PTT’s management structure, subsidiaries, and shareholding by business group respectively. PTT’S MANAGEMENT STRUCTURE NEW BUSINESS AND INFRASTRUCTURE OFFICER UPSTREAM PETROLEUM AND GAS BUSINESS GROUP GAS BUSINESS UNIT DOWNSTREAM PETROLEUM BUSINESS GROUP ENGINEERING AND INFRASTRUCTURE INTERNATIONAL TRADING BUSINESS UNIT INNOVATION AND NEW VENTURES DOWNSTREAM PETROLEUM BUSINESS GROUP 72 PTT GLOBAL CHEMICAL PUBLIC COMPANY LIMITED Form 56-1 One Report 2021
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