On the evening of March 3, 2026, China's three major state-owned oil companies—China National Petroleum Corporation (CNPC), China Petroleum & Chemical Corporation (Sinopec), and China National Offshore Oil Corporation (CNOOC)—issued consecutive announcements regarding abnormal stock price fluctuations. CNPC's announcement noted that its stock's cumulative closing price deviation exceeded 20% over three consecutive trading days (February 27, March 2, and March 3), cautioning investors about short-term volatility risks in the international crude oil market. Sinopec stated that its production and operational activities were normal upon self-inspection, with no significant undisclosed matters requiring disclosure. This event collectively reflects the official response of China's major fossil fuel enterprises to recent stock price anomalies and market risks, directly linking the impact of international oil price fluctuations on company valuations and market expectations.