Group 1 - The infrastructure investment is showing an upward trend, with the operating rate of China Petroleum's asphalt facilities at 31.50% for the week of October 23-29, 2025, an increase of 0.40 percentage points from the previous week, indicating a rise in infrastructure demand [1] - The cement price index averaged 102.54 points on October 25, 2025, a slight decrease of 0.07 points from the previous week, reflecting overall stability in the construction industry's prosperity [1] - The operating rate of major steel mills for rebar has increased by 0.33 percentage points to 43.30%, showing a correlation with infrastructure demand [1] Group 2 - The Building Materials ETF (159745) tracks the construction materials index (931009), which selects listed companies involved in the manufacturing and sales of cement, glass, ceramics, and other building materials from the Shanghai and Shenzhen markets [1] - The index constituents exhibit significant cyclical characteristics, closely related to the real estate and infrastructure sectors, with a focus on traditional manufacturing industries [1]