Sept 20 (Reuters) - HKEX Filing:
* SINOPEC BOUGHT BACK 23.2 MILLION CLASS H SHARES FOR HK$104.7 MILLION ON SEPT 20 - HKEX FILING
* SINOPEC BOUGHT BACK 500,000 CLASS A SHARES FOR RMB3.2 MILLION ON SEPT 20 - HKEX FILING
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