基础化工行业周报：维生素、液氯涨幅居前，关注顺周期与内需复苏方向

Investment Rating - The report maintains an "Overweight" rating for the basic chemical industry [6] Core Viewpoints - The basic chemical index outperformed the CSI 300 index by 2.04 percentage points, with a weekly increase of 7.54% compared to 5.50% for the CSI 300 [3][12] - Key sub-sectors showing significant gains include rubber additives (18.01%), non-metallic materials (11.74%), and civil explosives (11.42%) [3][12] - The report highlights a positive outlook for the refrigerant sector, chemical fiber sector, and quality growth stocks [6][35] Market Trends - The basic chemical index increased by 7.54% over the past week, ranking 20th among all sectors [3][12] - The top-performing sub-sectors were rubber additives, non-metallic materials, and civil explosives [3][12] Chemical Price Trends - The top five products with the highest weekly price increases were liquid chlorine (10.22%), domestic vitamin E (9.02%), liquid ammonia (8.20%), urea (7.82%), and international sulfur (6.78%) [4][16] - The top five products with the largest weekly price declines included butadiene (-8.06%), hydrochloric acid (-4.62%), pure MDI (-4.35%), niacinamide (-4.21%), and acetic anhydride (-4.17%) [4][16] Key Stock Dynamics - Notable stock performances included Xiamen Tungsten (53.52%), Tongyi Aerospace (50.68%), and Huifeng Diamond (45.23%) [12][14] - Stocks with the largest declines included Qingdao Kingking (−20.52%) and Hengtian Hailong (−13.73%) [12][15] Investment Recommendations - The report suggests focusing on the refrigerant sector, chemical fiber sector, and quality growth stocks such as Wanhua Chemical, Hualu Hengsheng, and Luxi Chemical [6][35] - Specific companies to watch include Jinshi Resources, Juhua Co., and Sanmei Co. in the refrigerant sector [6][35]