On July 9, the trading atmosphere in the polyester filament yarn market cooled sharply. Industry public data shows that the average sales-to-production ratio of sample enterprises was only 40.4%, a cliff-like drop of 63.2 percentage points from the previous trading day. This single-day plunge is extremely rare in the chemical fiber market records of the past two years, and the supply-demand game logic behind it is far more worth exploring than the numbers themselves.
Pulse-like Procurement: A Classic Signal of Inventory Cycle Shift
Looking at the specific enterprise data, the sales-to-production ratio on July 9 was extremely unevenly distributed: only a very few enterprises reached 120% or even 180%, while more than half of the sample enterprises had ratios concentrated in the 25% to 45% range, with the lowest even falling to 10%. This "fire and ice" pattern directly stems from the concentrated replenishment on July 8—after most downstream users completed a round of procurement, they collectively withdrew from the market the next day, leaving only a few users to continue restocking.
This pulse-like rhythm of "one day of volume, next day of sudden cold" is a typical high-frequency inventory cycle switching signal in the chemical fiber market. It means that the raw material inventory of downstream weaving enterprises has rebounded from a low level to a safe water level, and there is no longer rigid replenishment demand in the short term. For polyester filament yarn factories, this round of peak sales only lasted one day, indicating that the end demand is not solid.
Wait-and-See Sentiment Under Price Game: Who Sets the Pace?
The sharp fluctuation in the sales-to-production ratio is essentially the result of a price expectation game. The concentrated replenishment on July 8 was likely a "bottom-fishing" move by downstream enterprises triggered by a temporary low in polyester filament yarn prices or factory promotional policies. Once the procurement window closed, if prices failed to continue rising, wait-and-see sentiment quickly returned.
Currently, the cost support from upstream PTA and MEG still exists, but downstream weaving enterprises are facing the dual pressure of insufficient end orders and accumulated grey fabric inventory. The data from July 9 shows that downstream prefers to maintain a "low inventory, fast turnover" operation strategy and is unwilling to pay for price increase expectations. This means that if polyester filament yarn factories want to continue to increase shipments, they must make more price concessions, otherwise they risk passive inventory accumulation.
Transmission to Industrial Belts: Loom Operating Rates in Shengze, Changxing Under Pressure
The sharp drop in the sales-to-production ratio will have a direct transmission effect on the main chemical fiber industrial belts in the Yangtze River Delta. Weaving enterprises in Shengze, Changxing, Xiaoshan, and other places, after concentrated replenishment on July 8, will significantly slow down their subsequent raw material procurement pace. Considering that the current grey fabric shipment speed has not seen a significant acceleration, the operating rates of some weaving enterprises may be slightly reduced in the next 1-2 weeks.
For polyester filament yarn factories, a sales-to-production ratio below 40% for consecutive days will trigger inventory pressure alarms. Once factory inventories accumulate to a high level, the industry is likely to enter a new round of price reduction destocking cycles. At that time, the price spread structure of POY, FDY, and DTY will also adjust accordingly, and the processing profit margin of DTY may be the first to be squeezed.