On August 31, the average sales-to-output ratio of polyester filament sample enterprises stood at 82.8%, a sharp rise of 48.1 percentage points from the previous trading day. While such a single-day jump is rare in recent years, the more critical issue is the underlying driver: cost-side support rather than genuine demand recovery. When producers hold prices and downstream users rush to restock modestly, the market often enters a fragile balance—one that may not survive the test of the traditional peak season.
Cost Transmission and Output Sales Volatility
The sharp fluctuation in the sales-to-output ratio primarily stems from rapid cost escalation. Rising raw material prices squeezed polyester filament producers' margins, prompting them to adopt a low-price, hold-back strategy, reluctant to increase volumes amid an upward cost trajectory. Meanwhile, downstream users, fearing further cost increases, chose to restock in small quantities to lock in current relatively low prices. Together, these forces pushed the average ratio from 34.7% to 82.8%, with some enterprises even recording 260%.
Data distribution reveals a clear divergence: high ratios like 135%, 200%, and 260% are concentrated among large manufacturers, while small and medium enterprises still account for a significant share of sub-50% ratios. This divergence indicates that cost transmission is not uniform across the industry; large players' pricing power and channel advantages are amplified during cost fluctuations. For buyers, this means significant differences in quotes and supply stability among suppliers—relying solely on average data may mask structural risks.
Notably, this sales recovery bears a pulse-like character. Historical experience shows that cost-driven restocking often fades quickly once prices stabilize, lacking sustained support from terminal orders. The current small-batch restocking is more defensive than a genuine demand signal. If cost support weakens, the ratio may fall rapidly, and the market could slip back into wait-and-see mode.
Peak Season Expectations Under Real Test
As August closes, anticipation for the 'golden September and silver October' grows, yet this data casts a shadow over peak-season hopes. Cost-driven inventory builds provide short-term sentiment support but also pull forward some peak demand. When terminal orders have not clearly increased, midstream inventory transfers may simply shift pressure from mills to downstream, rather than achieving true digestion.
For filament producers, the low-price hold-back strategy is rational during cost upswings, but they must guard against excessive stockpiling. If costs retreat, accumulated inventory could amplify downward price pressure. Public industry data shows that over 40% of sample enterprises still have ratios below 50%, indicating that not all enjoy cost benefits; some small factories may struggle to choose between raising prices and destocking.
From downstream weaving enterprises' perspective, small-batch restocking controls short-term risk but increases procurement frequency and logistics costs. Amid heightened price volatility, balancing inventory risk and supply disruption risk becomes a daily challenge for purchasing managers. More critically, terminal demand in apparel and home textiles has not shown synchronized recovery, suggesting that the temporary sales boom may not be sustainable.