需求弱势叠加库存压力，乙二醇或延续承压下行

Report Industry Investment Rating No relevant content provided. Core Viewpoints of the Report - Due to weak demand and inventory pressure, ethylene glycol is likely to continue its downward trend. The price center may further test the support level of the next range, and if port destocking continues to face obstacles and demand does not improve, the downward pressure may increase [1][2] - Supply has a slight decline, but demand remains sluggish, and inventory pressure is increasing, especially the rapid accumulation of port inventory, which may suppress prices. Although the strengthening basis shows that the spot is relatively resistant to decline, the weakness of the futures main contract and the shrinking trading volume indicate insufficient market confidence. Therefore, the price may maintain a low - level oscillation, and attention should be paid to changes in the cost side and demand recovery [22][23] Summary by Relevant Catalogs 1. Daily Market Summary - Price and Basis: The price of the ethylene glycol main futures contract dropped slightly by 3 yuan to 4,319 yuan/ton, showing a four - day oscillating decline. The East China spot price also fell by 5 yuan to 4,435 yuan/ton, and the basis widened by 3 yuan to 121 yuan/ton, indicating a premium structure of the spot relative to the futures. The far - month spread fluctuated significantly, with the 1 - 5 spread widening to - 37 yuan and the 5 - 9 spread changing from premium to discount of 12 yuan, suggesting a weak market expectation for medium - term supply and demand [1] - Position and Trading Volume: The trading volume of the main contract decreased significantly by 77,639 lots to 106,908 lots (a decline of 42%), and the position decreased slightly by 190 lots, reflecting a decrease in market trading activity and an increase in the wait - and - see sentiment of funds [1] - Supply Side: The total ethylene glycol operating rate dropped slightly by 0.14 percentage points to 71.24%. Among them, the oil - based operating rate decreased by 0.24% month - on - month, while the coal - based and methanol - based plant operating rates remained stable. Despite the continuous loss of coal - based production at - 338 yuan/ton, the willingness to overhaul did not increase significantly, and the overall supply remained at a high level [1] - Demand Side: The load rate of polyester factories remained stable at 89.42%, and the load of Jiangsu and Zhejiang looms remained at a low level of 63.43% for many consecutive days. Terminal orders showed no improvement, and the rigid demand support of the polyester segment for ethylene glycol was limited [1] 2. Inventory and Related Analysis - Inventory: The inventory at the East China main port increased to 48.57 tons (a week - on - week increase of 13.7%), and the inventory in Zhangjiagang soared by 40.6% to 18 tons, reaching a recent high. Although the arrival volume decreased by 6.7 tons to 10.17 tons, the port inventory accumulation pressure remained unresolved [2] - Cost - Supply and Demand Relationship: The coal - based production continued to incur losses, but the plants did not significantly reduce production. The oil - based and methanol - based operating rates remained stable, and the overall supply was loose. The rigid demand support of polyester was insufficient, the terminal weaving operating rate remained low, and the inventory climbed to a new high this year, suppressing market confidence [2] 3. Industry Dynamics and Interpretation - On September 10, the East China US dollar market negotiation remained stable, with near - month cargoes negotiated in the range of 520 - 523 US dollars/ton. The Shaanxi ethylene glycol market spot price remained stable, with the market average price around 3,990 yuan/ton for self - pick - up. The mainstream market was stable, and downstream players purchased as needed. The South China market spot was weakly stable, with the market negotiation atmosphere being cold, and the current price around 4,470 yuan/ton for delivery [5] - On September 10, market concerns about the escalation of the conflict in the Middle East supported the rise in oil prices. However, the commissioning of new ethylene glycol plants has been further implemented, and the spot basis in the market has narrowly shrunk. The current negotiation reference price in East China is around 4,437 yuan/ton [5] 4. Industry Chain Data Charts The report provides multiple data charts, including the closing price and basis of the ethylene glycol main contract, ethylene glycol production profit, domestic ethylene glycol plant operating rate, downstream polyester plant operating rate, ethylene glycol East China main port inventory statistics (weekly), and ethylene glycol industry total inventory [6][8][10]