A single-day jump of 48.1 percentage points in the average sales-to-output ratio of sampled polyester filament makers—from 34.7% to 82.8% on August 31—stands out sharply against any trading day this year. Yet the more telling signal lies in the structure behind the headline number: individual ratios ranged from 40% to 260%, with a few mills doubling their shipments while nearly a third struggled below 60%. This divergence suggests not a broad demand recovery but a concentrated restocking pulse triggered by cost shocks.
Data Anomaly: Pulse or Trend Reversal?
The average sales-to-output ratio of sampled polyester filament enterprises rose to 82.8%, up 48.1 percentage points from the previous session's close, climbing back above the breakeven line. But a closer look at the sample of 26 firms reveals extreme dispersion: only two or three exceeded 200%, while nearly one-third fell below 60%. The apparent "overall recovery" is largely driven by top-tier producers, while numerous smaller factories remain under inventory pressure.
Rising feedstock costs are the immediate catalyst. Higher raw material prices have shifted producer expectations, prompting widespread reluctance to sell at low prices—a defensive response to cost pressure and an active bet on firmer future prices. Meanwhile, downstream buyers, fearing further cost increases, have started small-scale replenishment. These two forces combined to produce the day's abnormal jump, but the sustainability of restocking remains questionable.
Industry Transmission: A New Phase of Upstream-Downstream Bargaining
Polyester filament sits mid-stream in the polyester chain, upstream of PTA and MEG, downstream of weaving and apparel fabrics. When costs strengthen, squeezed producers inevitably try to pass them downstream. But weavers currently face lackluster orders and limited capacity to absorb price hikes, hence only small supplementary purchases rather than bulk stockpiling—reflecting a lack of consensus between upstream and downstream on future price direction.
More noteworthy is the divergence in sales ratios. Mills with ratios above 100% tend to have product structures aligned with market hotspots and stronger customer loyalty; those below 60% often suffer from product homogenization and lose price competitiveness during price-hike expectations. This indicates that industry consolidation continues, with cost bargaining accelerating survival-of-the-fittest dynamics.