21.0% — in the polyester filament sector, this figure can no longer be dismissed as a seasonal dip. China customs and industry data show the average sales-to-output ratio of sample enterprises fell 4.8 percentage points from the prior trading day, with some plants recording zero sales. When more than half of sampled enterprises post ratios below 20%, the issue is no longer demand fluctuation but a deeper adjustment in downstream weaving.
Signals from the Weaving Front
The sales-to-output ratio is the most sensitive thermometer for fiber plants. A reading of 21% means only about one-fifth of daily output was purchased downstream, with the rest becoming inventory. Downstream resistance to current prices remains firm, buying is strictly need-based, and polyester filament trading is broadly quiet.
Why is the weaving slowdown more alarming than in previous years? Traditional off-season cuts are voluntary and reversible, but the current decline comes with a structural shift in purchasing behavior — downstream buyers are no longer stocking up in anticipation of price hikes, but switching to a just-in-time model. This thins the inventory buffer at fiber plants and shifts pricing power from seller to buyer.
In major industrial belts across Jiangsu and Zhejiang, loom utilization adjustments are happening faster than usual. Some mills are reducing speed rather than shutting down entirely, preserving both workforce and order flexibility. In the short term this is loss mitigation; in the long run it may accelerate industry polarization. Mills with stable order sources can hold on, while pure OEM players without differentiated products face greater pressure.
Upstream-Downstream Transmission and Price Expectations
Upstream polyester raw materials are also under strain. Persistently weak filament sales will in turn suppress polyester chip procurement, forming a negative feedback loop of falling chips, falling filament, and wait-and-see weaving. For buyers, this is not a bottom-fishing moment but a window to reassess supplier stability.
Exporters should watch two variables: whether overseas brand clients delay orders due to raw material price volatility, and whether exchange rates and freight costs further squeeze margins. When the domestic sales ratio stays below 30%, some plants may cut prices to clear inventory, briefly lowering export quotes but potentially raising client concerns about delivery and quality.
For mills, a 21% sales ratio is a warning line. If it stays below 25% for a week, product mix and customer portfolio need review. Production lines relying solely on conventional items and lacking functional or differentiated yarns are most vulnerable in this adjustment.
Practical Recommendations
For Buyers - Prioritize suppliers with stable utilization rates and delivery records to avoid delays from sudden slowdowns - Purchase in small,分批 batches to leverage the buyer's market for more flexible payment and return terms - Watch functional fabrics and recycled polyester, which can command premiums even during demand contractions
For Exporters - Recalculate pricing to account for raw material volatility, adding price adjustment clauses where necessary - Maintain frequent communication with overseas clients and pre-warn of potential delivery changes - Monitor Southeast Asian competitors' quotes to prevent a chain reaction of client price pressure from domestic cuts
The low polyester filament sales ratio is not an isolated event but a visible manifestation of structural adjustment in weaving. For all links in the chain, the real test is not surviving this month but judging whether this slowdown is cyclical or trend-driven. From purchasing behavior, utilization strategy, and inventory management, the latter is becoming more likely.