聚烯烃日报：需求季节性转换，聚烯烃窄幅波动-20250904

Report Industry Investment Rating - Not provided Core Viewpoints - The supply side of polyolefins has increased significantly due to the commissioning of new capacity and the increase in the overall operating rate of existing devices. The upstream inventory has shifted downward, with a slight decrease in production enterprise inventory and inventory accumulation in the middle - link, resulting in certain pressure on the supply side. The cost - end support is weak, and the demand side is slowly rising but lacks short - term new orders, with limited upward - driving force [3]. - For trading strategies, a neutral stance is taken for single - side trading; a 01 - 05 reverse spread is recommended for inter - period trading; and going long on the L - P spread is suggested for inter - variety trading [4]. Summary by Directory 1. Polyolefin Basis Structure - The closing price of the L main contract is 7247 yuan/ton (- 5), and the closing price of the PP main contract is 6954 yuan/ton (+ 11). The LL spot price in North China is 7180 yuan/ton (+ 10), in East China is 7170 yuan/ton (+ 0), and the PP spot price in East China is 6830 yuan/ton (- 20). The LL basis in North China is - 67 yuan/ton (+ 15), in East China is - 77 yuan/ton (+ 5), and the PP basis in East China is - 124 yuan/ton (- 31) [1]. 2. Production Profit and Operating Rate - The PE operating rate is 78.7% (+ 0.0%), and the PP operating rate is 80.2% (+ 2.0%). The PE oil - based production profit is 107.1 yuan/ton (- 95.7), the PP oil - based production profit is - 452.9 yuan/ton (- 95.7), and the PDH - based PP production profit is - 151.5 yuan/ton (- 125.4) [1]. 3. Polyolefin Non - Standard Price Spread - Not provided with specific content in the text 4. Polyolefin Import and Export Profit - The LL import profit is - 280.1 yuan/ton (- 20.0), the PP import profit is - 600.1 yuan/ton (- 50.0), and the PP export profit is 32.4 US dollars/ton (+ 6.2) [2]. 5. Polyolefin Downstream Operating Rate and Downstream Profit - The operating rate of PE downstream agricultural film is 17.5% (+ 2.9%), the operating rate of PE downstream packaging film is 49.6% (- 0.3%), the operating rate of PP downstream plastic weaving is 42.3% (+ 0.3%), and the operating rate of PP downstream BOPP film is 60.4% (- 0.3%) [2]. 6. Polyolefin Inventory - The upstream inventory has shifted downward, with a slight decrease in production enterprise inventory and inventory accumulation in the middle - link, indicating certain pressure on the supply side [3].