On September 3, the average production-sales ratio of sampled polyester filament enterprises plummeted to 25.8%, a sharp drop of 13.3 percentage points from the previous trading day's close. This figure not only reflects the day's sluggish market but also exposes the fragile balance of the chemical fiber supply chain under the dual pressures of high costs and weak demand. As polymerization costs remain elevated and downstream resistance spreads, a tug-of-war over price transmission and inventory pressure is quietly unfolding in the polyester filament market.
Market Sentiment Behind the Data
The production-sales ratio is a core indicator of activity in the polyester filament market. The September 3 data showed an extremely uneven distribution, ranging from 0% to 90%, but the vast majority of enterprises were concentrated in the low range of 10% to 30%. At least two enterprises reported zero sales, while only a few achieved 50% or 70%. This extreme divergence suggests that the market is not completely stalled but is experiencing significant structural differences—some enterprises may still maintain shipments due to customer structure or product differentiation, but overall buying interest remains tepid.
The cliff-like drop in the production-sales ratio directly reflects that downstream weaving enterprises' purchasing willingness has fallen to freezing point. Against persistently high polymerization costs, polyester filament manufacturers attempted to pass on cost pressures through price hikes, but downstream users clearly refused to pay for expensive raw materials. This price standoff led to shrinking market volumes, and inventory pressure began to accumulate upstream. For polyester filament makers, a production-sales ratio below 30% means daily output far exceeds sales; if this persists, inventory days will climb rapidly, forcing production cuts or price reductions.
Failed Cost Transmission and Regional Chain Reactions
Polymerization cost is the core variable in polyester filament pricing. In early September, upstream raw material prices such as PTA and MEG remained high, keeping polymerization costs elevated. Theoretically, cost increases should transmit smoothly down the chain, but this time the transmission mechanism is clearly blocked. The price hikes by polyester filament manufacturers met strong resistance from downstream weaving enterprises, which lack the space to accept expensive raw materials due to weak terminal orders. This transmission failure essentially reflects that terminal consumer demand is becoming more price-sensitive—when growth in end markets like apparel and home textiles is sluggish, the room for price increases in intermediate links is tightly capped.
From a regional industry belt perspective, major polyester filament consumption hubs such as Shengze and Changxing have seen signs of easing in loom operating rates. Some weaving enterprises are choosing to reduce operating loads to digest high-priced raw material inventories rather than restocking during the low production-sales period. Meanwhile, printing and dyeing plants in the Xiaoshan-Shaoxing area are also troubled by insufficient orders, further confirming weak terminal demand. This synchronized contraction upstream and downstream indicates that the chemical fiber industry chain is undergoing an active inventory destocking cycle, and the magnitude and pace of price adjustments will depend on whether polymerization costs can ease and whether terminal demand can recover before the traditional peak season.
Market Expectations and Operational Strategies
In the short term, the polyester filament market may continue a weak consolidation pattern. On one hand, if polymerization costs remain high, manufacturers' willingness to support prices remains strong, but low production-sales ratios will force them to consider promotional discounts. On the other hand, downstream users may continue to delay purchases under bearish expectations, waiting for lower entry points. Breaking this deadlock requires external variables—either a substantial pullback in upstream raw material prices or a significant volume increase in terminal orders during the traditional "Golden September and Silver October" peak season.
For market participants, the current production-sales ratio data is not just a snapshot of the day's trading but a barometer for future price trends. If the ratio remains below 30% for several consecutive days, inventory pressure will force manufacturers to cut prices, potentially leading to catch-up declines in polyester filament prices. Conversely, if the ratio quickly recovers above 50%, it indicates improved downstream acceptance, and prices may stabilize. Therefore, closely monitoring daily production-sales ratio changes can capture the market's true pulse more effectively than simply tracking quoted prices.