有机硅行业至高减产30%，XRG收购科思创交易获德国批准

Investment Rating - The industry investment rating is "Overweight" [1] Core Views - The chemical sector overall experienced a decline of 7.47% during the week of November 17-21, 2025, ranking 29th among all sectors, underperforming the Shanghai Composite Index by 3.57 percentage points [4][22] - The report highlights a continued trend of divergence in the chemical industry for 2025, recommending focus on sectors such as synthetic biology, pesticides, chromatography media, sweeteners, vitamins, light hydrocarbon chemicals, COC polymers, and MDI [4] Summary by Sections Industry Performance - The chemical sector's performance was notably poor, with the Shanghai Composite Index declining by 3.90% and the ChiNext Index by 6.15% during the same period [4][22] - The report indicates that the chemical sub-sectors showed varied performance, with the least decline in refining chemicals (-0.58%) and the most significant decline in fluorinated chemicals (-11.00%) [23] Key Industry Dynamics - The report discusses the upcoming quota policies for refrigerants, which are expected to enter a high prosperity cycle starting in 2024, with a continuous reduction in supply for second-generation refrigerants [5] - The electronic specialty gases market is highlighted as a critical area for domestic substitution opportunities due to high technical barriers and increasing demand from semiconductor and photovoltaic sectors [6][8] - The light hydrocarbon chemical trend is identified as a global movement, with a shift towards lighter raw materials for olefin production, which is expected to enhance the valuation of leading companies in this sector [8] - The COC polymer industry is experiencing accelerated domestic industrialization, driven by the shift of downstream industries to domestic production and the need for supply chain security [9] - The potassium fertilizer market is anticipated to rebound as major producers reduce output, leading to a potential recovery in prices [10] - The MDI market is characterized by oligopoly, with a favorable supply structure expected as demand gradually recovers [12]