Group 1 - The current policy is positively oriented and is expected to boost the building materials sector, which has been in decline alongside real estate in recent years [1] - High-frequency data indicates that various sub-industries within building materials have reached profit bottoms, with cement and fiberglass expected to bottom out in Q1 2024, and float glass in September 2024 [1] - Demand-side factors include significant government meetings focusing on stabilizing the real estate market, with urban renewal initiatives likely to drive demand for construction materials such as pipes, waterproofing, and coatings [1] Group 2 - The building materials ETF (159745) is the largest in the market, closely tracking the CSI All-Share Building Materials Index, and is expected to benefit from the recovery in consumption and the real estate market [2] - Investors without stock accounts can access building materials investment opportunities through the building materials ETF's connecting fund (013020) [3] - As of July 21, 2025, the building materials ETF has a scale of 1.111 billion, ranking first among similar products [3]