On September 7, the thermometer of the polyester filament market read 23.5%—the average production-sales ratio among sampled enterprises, up just 2.5 percentage points from the previous trading day. The figure itself is not astonishing, but on the eve of the traditional peak season, it sends a chill through the entire supply chain: downstream resistance to high-priced raw materials persists, and sluggish trading continues.
Signals Behind the Data
The production-sales ratio is the most direct window into supply-demand balance in the polyester chain. An average of 23.5% means that for every 100 tons of polyester filament produced by sampled enterprises, only about 23.5 tons were effectively sold, with the rest adding to inventory pressure. More striking is the sharp internal divergence: among the disclosed ratios, some reached 130% while others hit zero, a gap of over a hundred percentage points. Such dispersion indicates not a broad recovery but structural differentiation—a few enterprises maintain shipments through differentiated products or customer loyalty, while most struggle with rising inventories.
On the cost side, polyester filament prices are consolidating, with high upstream raw material costs and insufficient downstream acceptance creating a tug-of-war. This standoff is particularly taxing on the cash flow of mid-sized factories: raw material purchases require real capital, while finished product sales recover slowly, squeezing both ends and making operating rate adjustments inevitable. Historical experience suggests that when the production-sales ratio stays below 30% for consecutive days, factories often resort to price cuts or production cuts to protect margins. September is the traditional launch period for autumn/winter fabric orders, and if the ratio remains depressed, a new round of price competition may follow.
Market Deadlock and Transmission Effects
The downstream of polyester filament is weaving enterprises, especially small and medium-sized mills in Zhejiang and Jiangsu. These enterprises are highly price-sensitive; when polyester yarn prices exceed their psychological threshold, they typically reduce purchase frequency and digest existing inventories. This 'buy on rising, not falling' mentality is amplified in weak markets, further suppressing the recovery of the production-sales ratio. Meanwhile, the terminal recovery of apparel and home textiles is slower than expected, with brands placing orders cautiously, leaving weavers short of orders and lacking the incentive to replenish stocks.
Notably, a low production-sales ratio does not mean demand has vanished—it is merely suppressed by high prices. Once polyester yarn prices see a substantive correction, pent-up demand may release in a burst, causing a spike in the ratio. This potential elasticity is both an opportunity and a risk for traders: stocking up early may miss the mark, while waiting risks missing the low point. Historical patterns suggest that from mid-September to October is the traditional peak season for polyester filament; if cost-side pressures ease or downstream orders improve, the current deadlock could break.