港交所文件显示：12月12日，中国石油化工股份(00386.HK)回购了67.8万股H股，耗资290万港元。

Core Viewpoint - On December 12, China Petroleum & Chemical Corporation (Sinopec) repurchased 678,000 H-shares at a cost of HKD 2.9 million [1] Group 1 - The repurchase of shares indicates a strategic move by the company to enhance shareholder value [1] - The total expenditure for the share buyback was HKD 2.9 million, reflecting the company's commitment to returning capital to shareholders [1]