12月建筑业景气环比改善，持续关注洁净室和新疆区域投资机会

Investment Rating - The report maintains an investment rating of "Leading the Market-A" [6] Core Insights - The construction industry showed a month-on-month improvement in December, with a composite PMI output index of 50.7%, up 1.0 percentage points from the previous month, indicating overall expansion in production and business activities [1][16] - The construction business activity index for December was 52.8%, an increase of 3.2 percentage points, while the new orders index was 47.4%, up 1.3 percentage points [1][16] - The government is actively promoting infrastructure investment, with a total of approximately 295 billion yuan allocated for early-stage "two heavy" construction projects and central budget investments [2][17] - The construction industry is expected to see continued marginal improvement driven by favorable fiscal policies and the implementation of debt reduction and "anti-involution" measures [3][4][18] Summary by Sections Industry Dynamics - The construction industry experienced a month-on-month improvement in December, with significant increases in both the business activity index and new orders index [1][16] - The State Council emphasized the importance of the national water network construction, which is expected to drive substantial investment and collaboration across various sectors [1][16][33] Market Performance - The construction sector saw a decline of 0.44% this week, performing better than the Shanghai and Shenzhen 300 index, which fell by 0.59% [19][20] - Notable sub-sectors such as landscaping engineering and steel structures showed positive performance, with increases of 2.01% and 1.30%, respectively [19] Key Investment Opportunities - The report suggests focusing on undervalued state-owned enterprises in the construction sector, including China State Construction, China Communications Construction, and China Railway Construction, which are expected to benefit from improved operational metrics and dividend increases [4][11] - The Xinjiang region is highlighted for its robust infrastructure investment, particularly in coal chemical projects, which are anticipated to maintain high levels of activity [10][11] - Cleanroom engineering companies like Yaxiang Integration and Shenghui Integration are recommended due to the rising demand driven by advancements in AI technology and increased capital expenditure in the semiconductor industry [3][11][13]