On September 7, the average sales-to-output ratio of polyester filament among sample enterprises stood at 23.5%, a modest recovery of 2.5 percentage points from the previous trading day. This figure implies that for every 100 tons of polyester filament produced, fewer than 24 tons were purchased by downstream customers, with the remainder adding to inventory. Public industry data paints a picture far more concerning than the surface numbers suggest.
What the Sales-to-Output Data Reveals
According to the day's data from individual enterprises, the ratios varied dramatically: the highest reached 130%, while the lowest was zero. More than half of the sample enterprises recorded ratios below 25%, and only a few achieved over-sales. This extreme divergence reflects a lack of consensus in the market—some enterprises managed to sustain shipments through differentiated products, while conventional specifications faced severe sluggishness.
Downstream users' resistance to high feedstock prices persisted, and the market remained quiet. This is not accidental. While polyester filament mills attempted to pass on cost pressures by maintaining prices, downstream weaving enterprises clearly rejected this logic. The profit distribution along the textile chain is undergoing a rebalancing, and the scale currently tilts toward the downstream.
How Did the Stalemate Form?
To understand this impasse, one must extend the timeline. Since the beginning of September, the polyester filament market has been trading sideways, with the sales-to-output ratio hovering around 20%. This is not a short-term fluctuation driven by a single event but the result of a phase in upstream-downstream bargaining. Upstream, PTA and MEG prices, influenced by crude oil volatility, still provide some cost support. Downstream, however, weaving enterprises have not seen a significant pickup in orders and are only purchasing raw materials on a need basis.
More critically, the peak season signals from the end-user apparel and home textile markets have not yet become clear. In previous years, Double Eleven stocking and autumn/winter fabric orders would typically begin to ramp up by now, but this year the pace has noticeably delayed. Weaving enterprises generally adopt a "buy as you go" strategy, avoiding building inventory at high prices. This mentality, in turn, suppresses the pricing power of polyester filament mills, creating a self-reinforcing cycle of wait-and-see.
Transmission Effects on Industrial Clusters
The sluggish sales-to-output ratio is transmitting along the chain to regional industrial clusters. In weaving hubs such as Shengze and Changxing, loom utilization remains relatively stable, but raw material inventories are generally maintained within a 7-10 day safety margin. Enterprises in Shaoxing and Xiaoshan, particularly those in circular knitting and warp knitting, have compressed procurement cycles to 3-5 days, relying mainly on urgent replenishment.
This short-cycle procurement model directly weakens the order visibility for polyester filament mills. Production scheduling is frequently adjusted, and some enterprises are beginning to alleviate inventory pressure through maintenance shutdowns or rate cuts. If the sales-to-output ratio remains below 30%, broader production cuts are expected after mid-September, potentially leading to a new round of supply-demand adjustments.
For traders, the current timing is particularly awkward. Those who stocked up at high prices earlier face the risk of losses, while those with empty warehouses dare not enter the market rashly. The narrowing of the basis between spot and futures has reduced the space for hedging operations, and speculative demand has cooled significantly. The entire circulation segment is in a state of low liquidity and high uncertainty.
Key Variables for the Future
In the short term, polyester filament prices are likely to fluctuate within a narrow range. Upside is limited by weak demand, while downside is supported by costs. Notably, if international oil prices experience sharp fluctuations, a loosening of the cost side could break the current balance, triggering a round of catch-up declines. Conversely, if downstream orders concentrate in late September, the sales-to-output ratio could quickly rebound to above 50%, and prices may see a phased rebound.
From a medium-term perspective, the capacity expansion cycle of the chemical fiber industry is not yet complete, and the release of new capacity will continue to suppress price upside. However, the prevalence of low inventory strategies downstream also means that once demand improves, restocking demand will surge explosively. This "low inventory + high elasticity" pattern often breeds super-expectation price movements.