Group 1 - The core viewpoint of the news is the performance and growth of the Petrochemical ETF, which has shown significant increases in both net inflow and value over recent periods [1][2] - As of December 4, 2025, the Petrochemical ETF has achieved a net inflow of 25.50 million yuan over the past nine days, with a maximum single-day inflow of 11.49 million yuan [1] - The Petrochemical ETF's net asset value has increased by 28.30% over the past two years, with a highest monthly return of 15.86% since its inception [1] Group 2 - The top ten weighted stocks in the Petrochemical Industry Index account for 56.67% of the index, with major companies including Wanhua Chemical, China Petroleum, and Yalku [2] - The Petrochemical ETF has reached a new high in both scale and share, with a total scale of 202 million yuan and 242 million shares as of the latest report [1]