On August 31, the polyester filament market produced a striking figure: the average sales-to-production ratio among sampled enterprises reached 82.8%, a jump of 48.1 percentage points from the previous trading day. Such a near-doubling increase within a single session is rare in recent months, and it points not to simple inventory clearing but to a concentrated resonance between upstream and downstream cost expectations.
Sentiment Reversal Behind the Data The ratio climbed from around 34.7% to 82.8%, implying that most mills shipped volumes close to or exceeding their output that day. Disclosed sub-data show wide variance: some mills recorded as high as 260%, while others only 40%, but the overall center of gravity clearly shifted upward. This divergence indicates that the market's recovery is not broad-based; rather, some mills captured restocking orders through pricing strategies or customer structures.
More noteworthy is the behavioral logic behind the data. After cost-side strengthening, polyester filament producers generally became reluctant to sell at low prices, while downstream users, fearing higher future procurement costs, chose to restock in small quantities. Such 'fear of rising prices' procurement tends to come quickly and fade quickly. Therefore, whether the 82.8% ratio marks a trend inflection or a pulse rebound requires observation over the next few sessions.
Cost Pass-Through and Industrial Belt Response The direct driver of this sales rebound is cost. When upstream raw material prices rise, polyester plants' processing margins compress, naturally reducing their willingness to sell at low prices. For industrial clusters represented by Shengze and Changxing, this means factories gain more confidence to hold prices during negotiations, and some specifications may see tentative upward adjustments.
For downstream weaving enterprises, cost pressure is transmitting along the supply chain. Greige fabric prices may not rise in tandem, but the procurement window is narrowing. If raw material prices continue to climb, weavers' cash flow pressures will intensify, especially for small and medium mills that rely on short-term orders and lack raw material inventory. Conversely, if costs retreat, those who restocked at high prices face inventory devaluation risks.
Market Expectations and Operational Rhythm In the short term, cost support and reluctance to sell may push polyester filament prices to run firm. However, it is crucial to recognize that downstream demand has not shown substantive explosion—the divergence in sales ratios and some mills recording only 40% indicate limited support from end orders. Once cost-side loosens, the earlier restocking demand may quickly cool, and prices face correction risk.
For market participants, the focus now should be on inventory turnover rather than price fluctuations. Large swings in the sales-to-production ratio often signal intense market sentiment shifts, not fundamental reversals in supply-demand dynamics. In the absence of clear trend signals, maintaining flexible procurement and controlling raw material inventory levels may be a more prudent strategy.