南华能化指数下跌55.02点，跌幅为-0.5%

Group 1: Report Overview - The report is the "South China Commodity Index Weekly Report" dated October 17, 2025, prepared by the Index Development Department [2][3][4] Group 2: Index Performance Overall Index Performance - The South China Composite Index closed at 2521.90 this week, down 28.96 points or -1.14% from last week. The most influential varieties were crude oil and iron ore, with the crude oil index down -6.23% contributing -1.02% and the iron ore index down -3.02% contributing -0.23% [1][4][5] Sub - index Performance - The South China Precious Metals Index rose 158.66 points or 10.76% to 1633.24 [5] - The South China Industrial Products Index closed at 3466.89, down 106.23 points or -2.97%. The most influential varieties were crude oil and glass, with crude oil contributing -1.09% and glass contributing -0.28% [1][4][5] - The South China Metal Index closed at 6349.75, down 100.03 points or -1.55%. The most influential variety was iron ore, contributing -0.5% [1][4][5] - The South China Energy and Chemical Index closed at 1549.68, down 55.02 points or -3.43%. The most influential variety was crude oil, contributing -1.56% [4][5] - The South China Non - ferrous Metals Index closed at 1715.43, down 18.52 points or -1.07% [5] - The South China Black Index closed at 2486.47, down 42.09 points or -1.66% [5] - The South China Agricultural Products Index closed at 1044.65, down 16.14 points or -1.52%. The most influential variety was live pigs, contributing -0.6% [4][5] Group 3: Index Ratio and Ranking - The report provides the ratio data of various South China commodity indexes and their rankings. For example, the ratio of the precious metals index to the composite index was 0.648, up 0.069551849 from last week, with a ranking of 0.999. The ranking indicator shows the position of the latest value in the historical distribution, with values closer to 0 indicating closer to the historical bottom and values closer to 1 indicating closer to the historical top [9] Group 4: Variety Contribution - The report shows the contribution of each variety's daily price change to the index price change. For example, soybean meal had a week - on - week increase of 1.11%, with a position - holding ratio of 10.71% [11]