化工行业周报：三代制冷剂价格普涨，三氯蔗糖价格大幅上调

Investment Rating - The report maintains a positive outlook on the basic chemical industry [1] Core Views - Refrigerants are experiencing price increases due to tight supply and strong demand, with notable price hikes in R32, R134a, and R125 [2][4] - The price of sucralose has significantly risen, driven by limited supply and strong pricing power from producers [3][4] Summary by Sections 1. Key Chemical Product Price Tracking - The report highlights price increases in refrigerants R134a (up 5.71%), sucralose (up 14.29%), and vitamins A and E [13] - The prices of R142b and R22 have risen to 16,000 CNY/ton and 32,000 CNY/ton respectively, with R125 and R134a reaching 37,500 CNY/ton and 38,000 CNY/ton [2][32] 2. Refrigerants - The supply of refrigerants is tightening due to limited production of fluorite and strong external demand, leading to increased margins for third-generation refrigerants [4][29] - Recommended companies to watch include Juhua Co., Ltd., Sanmei Co., Ltd., and Yonghe Co., Ltd. [4] 3. Sucralose - Sucralose prices have surged to 240,000 CNY/ton, reflecting a strong pricing stance from manufacturers amid low inventory levels [3][4] 4. Polyurethane - MDI prices have seen a slight increase due to supply constraints from maintenance schedules at major production facilities [16][17] 5. Agricultural Chemicals - Glyphosate prices have decreased, with a reported price of 24,701 CNY/ton, and margins have also declined [19][20] 6. Phosphate Fertilizers - Prices for monoammonium phosphate and diammonium phosphate have decreased, with current prices at 3,059 CNY/ton and 3,643 CNY/ton respectively [23][25] 7. Urea and Potash - Urea prices have slightly increased to 1,852 CNY/ton, while potash prices have risen to 2,406 CNY/ton [26][28] 8. Fluorinated Chemicals - The report notes a general increase in margins for third-generation refrigerants, with upstream costs for fluorite and hydrofluoric acid also rising [29][32]