Closing data on September 7 showed that the average sales-to-output ratio of sampled polyester filament enterprises was only 23.5%, up 2.5 percentage points from the previous trading day, but still in the low range for the year. More notably, among the 27 sample enterprises, over 80% had ratios below 30%, with some even at zero. The so-called 'rise' is more of a technical recovery driven by a low base effect than a real signal of demand recovery.
The Real Picture Behind the Data
The sales-to-output ratio is a core indicator measuring the match between daily sales and output. A ratio of 23.5% means that less than one-quarter of the day's output was sold. The distribution was extremely polarized: the highest reached 130%, the lowest was 0%, and the median was only around 20%. This 'long-tail distribution' reveals a key fact: the market is not uniformly shrinking but is structurally divided. A few enterprises maintain higher shipments through differentiated products or customer loyalty, while most are stuck in a deadlock of 'price without buyers.'
The polyester filament market remained rangebound overall, with prices neither falling sharply nor showing rebound momentum. Downstream buyers' resistance to high-priced raw materials continued to ferment, significantly slowing procurement pacing, with most purchases limited to essential restocking and speculative buying almost nonexistent. This 'price standoff with thin trading' is essentially a tug-of-war over profit distribution: polyester plants try to protect processing margins by holding prices firm, while weaving mills refuse to accept high prices due to insufficient end-orders.
Supply Chain Transmission and Inventory Logic
The direct consequence of low sales-to-output ratios is the continuous accumulation of inventory at polyester plants. According to industry experience, a ratio below 30% means inventory days will passively increase. If this state persists for more than two weeks, warehouse pressure and capital occupation costs will rise significantly, eventually forcing enterprises to cut prices to stimulate sales. Currently, social inventory of polyester filament is at a medium-high level, while downstream weaving mills' raw material inventory remains at a low level—this mismatch of 'high upstream inventory, low downstream inventory' sets the stage for future price volatility.
On the demand side, the terminal textile and apparel market has entered the traditional 'golden September and silver October' peak season, but this year's peak season is clearly underperforming. Overseas orders continue to weaken due to geopolitical tensions and inflation, while domestic consumption recovery is moderate, limiting the increase in weaving mill operating rates. For polyester filament, this means the demand 'ceiling' has been lowered. Even with cost support, the upside for prices is constrained. Industry profits are being squeezed from the polyester segment toward both ends, leaving midstream processing enterprises in a 'squeezed from both sides' dilemma.
Price Expectations and Procurement Strategies
In the short term, polyester filament prices are likely to maintain range-bound fluctuations. On one hand, crude oil and PTA costs still provide support, and polyester plants have a strong willingness to hold prices. On the other hand, high inventories and low sales-to-output ratios exert downward pressure, and price rebounds lack volume support. For buyers, this is not the time for panic restocking, but there is also no need to be overly bearish—if plants initiate price cuts due to inventory pressure, that may offer a periodic buying opportunity.
It is worth noting that the divergence in sales-to-output ratios also highlights the importance of supplier selection. During industry downturns, enterprises that consistently maintain ratios above 80% often have unique advantages in product mix or customer service, offering greater price stability and more reliable delivery. Buyers should evaluate suppliers' inventory health and resilience beyond mere price comparison, avoiding disruptions to production plans due to a single supplier's production halt or price cut.
Practical Recommendations
For Buyers - Procure in batches based on demand, keeping raw material inventory at 7-10 days of usage to avoid capital occupation due to price fluctuations. - Closely monitor weekly reports on sales-to-output ratios and inventory days; when the ratio falls below 20% for three consecutive days, a price-cut promotion window can be expected. - Prioritize suppliers with stable ratios above 80%, and sign monthly framework agreements to lock in processing margins.
For Foreign Trade Enterprises - Include raw material price linkage clauses in export contracts to partially transfer polyester filament price fluctuation risks to overseas buyers. - Use the current price standstill to negotiate forward delivery contracts with upstream plants, locking in yarn costs for the fourth-quarter peak season. - Monitor the linkage between RMB exchange rate and crude oil prices, and increase exchange settlement during favorable windows to hedge against raw material cost uncertainty.
The downturn in the polyester filament market is not a one-day affair; it reflects the deep adjustment of the global textile supply chain. This seemingly dry data point of sales-to-output ratio actually reveals the difficult process of supply-demand rebalancing. For industry practitioners, rather than guessing price inflection points, it is wiser to closely track marginal changes in sales-to-output ratios and inventory levels—when these two indicators show a trend reversal, the market direction will become truly clear.