基础化工行业周报：中国资环集团成立，纯MDI、TDI价格上涨

Investment Rating - The report rates the basic chemical industry as "Overweight" [1]. Core Insights - The chemical sector is expected to continue its differentiated trend in 2024, with a focus on synthetic biology, agricultural medicine, chromatography media, sweeteners, vitamins, light hydrocarbon chemicals, and COC polymers [1]. - The demand for MDI is anticipated to remain stable due to its high technical barriers and the concentration of production among a few major players [6]. - The market for refrigerants is entering a high prosperity cycle as quota policies are set to be implemented, leading to a supply reduction of second-generation refrigerants and a stable increase in prices [1][6]. Summary by Sections Industry Review - The chemical sector's overall performance ranked 19th with a weekly change of +0.98% from October 14 to October 18, 2024 [13]. - The top three performing sectors were computer (+10.29%), electronics (+9.65%), and defense industry (+7.89%) [13]. - The top three declining sectors were food and beverage (-3.18%), oil and petrochemicals (-2.00%), and coal (-0.91%) [13]. Supply Side Tracking - A total of 110 chemical enterprises had their production capacities affected this week, with 12 undergoing maintenance and 9 restarting operations [7]. Key Industry Tracking - The report highlights the ongoing trend of light hydrocarbon chemicals becoming a global trend, with a shift from heavy raw materials to lighter ones like ethane and propane [3]. - The COC polymer industry is accelerating its industrialization process, with domestic companies expected to break through supply bottlenecks [3]. - The potassium fertilizer market is projected to rebound as major producers reduce supply, alleviating inventory pressures [4]. Company Performance - The top three gaining companies in the chemical sector for the week were Kexin Energy (+43.8%), Guofeng New Materials (+36.8%), and Hengtian Hailong (+30.3%) [17]. - The top three declining companies were Hongda New Materials (-11.7%), Yabong Co., Ltd. (-9.1%), and Kasei Biotech (-7.4%) [19].