Huaan Securities·2026-02-01 10:30Key Insights on Infrastructure Investment Opportunities - A seasonal infrastructure construction boom occurs from the end of the Spring Festival to the conclusion of the National People's Congress, lasting approximately 1-1.5 months, presenting significant investment opportunities[2] - The report identifies 10 strong sub-sectors with high odds and win rates, including engineering consulting services, environmental equipment, environmental governance, general equipment, specialized engineering, non-metallic materials, new metallic materials, specialized equipment, decoration, and plastics, with average returns of 12-15% and excess returns of 4-8% over the past decade[2][10] Selected Stocks from Strong Sub-sectors - The report highlights a portfolio of 18 stocks selected from the 10 strong sub-sectors based on a scoring model, which includes: - Engineering consulting: Qidi Design (average excess return 22.7%, win rate 100%) and Jian Ke Yuan (average excess return 16.4%, win rate 100%)[3][19] - Environmental equipment: Xianhe Environmental (average excess return 11.7%, win rate 90%) and Senyuan Co. (average excess return 12.2%, win rate 80%)[3][20] - Environmental governance: Shanghai Washba (average excess return 36.0%, win rate 100%) and Dechuang Environmental (average excess return 19.1%, win rate 89%)[3][23] - General equipment: Jialitu (average excess return 35.3%, win rate 100%) and Jinyang Sun (average excess return 28.8%, win rate 100%)[3][26] Performance and Risk Considerations - The selected 10 strong sub-sectors have consistently shown high absolute and excess return probabilities, with a stable performance track record over the past decade[10][13] - Risks include limitations of comparative studies, market learning effects leading to volatility, unexpected market downturns, and individual stock risks impacting the overall portfolio[4]