国际油价持平，MDI价格略跌、醋酸价格上涨

Core Viewpoint - The report highlights the stability of international oil prices and suggests focusing on undervalued leading companies in the chemical industry, the impact of "anti-involution" on supply, and the importance of self-sufficiency in electronic materials and certain new energy materials amid price increases [1][7]. Industry Dynamics - During the week of December 22-28, 34 out of 100 tracked chemical products saw price increases, while 32 experienced declines, and 34 remained stable. 55% of products had month-over-month price increases, 35% saw decreases, and 10% remained unchanged [2]. - The average price of WTI crude oil was $56.74 per barrel with a weekly increase of 0.14%, while Brent crude oil was $60.64 per barrel with a 0.28% increase. Geopolitical tensions in Ukraine have affected energy infrastructure [3]. - The average price of pure MDI decreased by 4.23% to 18,100 CNY/ton, while the average price of polymer MDI fell by 2.39% to 14,300 CNY/ton. The demand from downstream industries remains weak [4]. - Acetic acid prices increased by 2.93% to 2,496 CNY/ton, with a production increase of 2.71% to approximately 238,900 tons. The overall operating rate for acetic acid was 72.15% [5][6]. Investment Recommendations - As of December 27, the SW basic chemical sector's P/E ratio is 25.60, and the P/B ratio is 2.33. The SW oil and petrochemical sector's P/E ratio is 13.17, and the P/B ratio is 1.28. The report suggests focusing on undervalued leading companies, the impact of "anti-involution," and the importance of self-sufficiency in electronic materials and new energy materials [7]. - Long-term investment themes include potential demand recovery supported by policies, continuous supply-side optimization, and growth in emerging sectors such as semiconductor materials and new energy materials [7]. - Recommended stocks include Wanhua Chemical, Hualu Hengsheng, and others, with a focus on companies in sectors like fluorochemicals, agriculture, refining, and textiles [7][8].