基础化工行业简评报告：天然橡胶延续上涨，湖北宜化签署子公司股权转让合同

Investment Rating - The report rates the industry as "Positive" [1] Core Insights - The Shanghai Composite Index closed at 3087.53 with a weekly increase of 12.81%, while the Shenzhen Component Index rose by 17.83%. The basic chemical sector (Shenwan) reported a weekly increase of 14.33%, outperforming the Shanghai Composite by 1.52 percentage points [2][3] - All 31 first-level industries in Shenwan showed positive growth, with all seven second-level chemical sub-industries also reporting positive changes. Notably, all 23 third-level sub-industries in chemicals experienced positive growth [2][3] - Key stocks that performed well include Haixin Nengke, Ningxin New Materials, and Tian Sheng New Materials, among others [6] Chemical Price Review - The report highlights significant price increases for several chemicals, including liquid chlorine (+28.38%), methyl acrylate (+11.36%), and natural rubber (+4.22%). Conversely, BDO saw a decline of 9.76% [9][10] - The report also notes substantial changes in chemical price spreads, with the price spread for adipic acid increasing by 87.92% and PTMEG by 56.52% [11][12] Investment Themes 1. Leading chemical companies are expected to maintain strong profitability and investment value due to their comprehensive advantages developed over years. Recommended companies include Wanhua Chemical, Hualu Hengsheng, and Baofeng Energy [2][3] 2. The global tire demand is steadily increasing, with domestic tire companies gaining market share. Companies like Sailun Tire and Senqilin are recommended for their overseas expansion [2][3] 3. The agricultural chemical sector is expected to see stable demand due to high grain prices and increasing arable land. Companies with rich phosphate resources such as Chuanheng Co. and Yuntianhua are highlighted [2][3] 4. The refrigerant industry is anticipated to enter a long-term upward cycle, with recommendations for companies like Juhua Co. and Yonghe Co. [2][3]