PetroChina 601857, 16.18, 0.83 (5.41%), opened today at 15.45, highest at 16.55, with a trading volume of 212.77 and a P/E ratio of 39.43. The SSE Composite Index is at 3372.60 (1.33%). Yesterday's closing price was 15.35, the lowest was 15.37, turnover...