On September 1, the average sales-to-output ratio of polyester filament yarn sample enterprises closed at 39.8%, a sharp drop of 43.0 percentage points from the previous trading day. This figure not only erased the optimism generated by the end-of-day surge a day earlier, but also forced market participants to reassess the short-term supply-demand balance. For chemical fiber traders who rely on cash flow turnover, such violent fluctuations in the sales ratio often signal renewed inventory pressure, and a sudden slowdown in downstream procurement could become a new variable in price negotiations.
Event Background
At the end of the previous trading day, some polyester filament yarn manufacturers reported sales-to-output ratios as high as 300%-400%. Such short-term spikes are not uncommon in the chemical fiber market, typically triggered by concentrated restocking or speculative buying. However, on September 1, after most specifications raised their quotes, downstream resistance quickly intensified, and inquiry activity fell noticeably. The segmented data released that day showed extreme divergence among sample enterprises: some achieved 150%, while many languished at 10%-20%. The median level was far below the average, indicating that the market was not uniformly weak but rather experiencing structural divergence.
This pattern of "end-of-day surge followed by next-day decline" has appeared multiple times in recent weeks. The evening reports on September 8, 7, 4, and 3 tracked similar fluctuations, suggesting the market is in a high-level oscillation phase. Notably, the volatility in sales ratios does not purely reflect demand changes; it mirrors the tug-of-war between upstream and downstream players: upstream attempts to test market acceptance through price hikes, while downstream responds with wait-and-see and delayed purchasing. When price increase expectations lack sufficient volume support, the window for price adjustments often narrows.
Industry Impact
The immediate consequence of the plunging sales ratio is rising inventory risk. For polyester filament yarn factories, a 39.8% average sales ratio means that over 60% of daily output failed to convert into sales, occupying warehouse space and tying up capital. With raw material prices relatively stable, factories may face a "quoted but not sold" dilemma—sticking to prices makes shipments harder, while discounting could undermine the price support they have built. This predicament is especially acute for small and medium-sized producers, which lack the buffer of long-term contracts and are more sensitive to short-term sales fluctuations.
For downstream weaving enterprises, the current wait-and-see strategy may suppress procurement costs in the short term, but it carries the risk of missing the boat. Price hikes in the chemical fiber market tend to be impulsive; once upstream maintenance or supply disruptions tighten availability, prices can jump within days. The September 1 data still showed some enterprises achieving 80%-100% ratios, indicating that rigid demand has not disappeared but is temporarily suppressed. If weavers delay restocking excessively, they may be forced to chase higher prices in the next rally, inflating overall procurement costs.
From an industrial chain perspective, price fluctuations in polyester filament yarn transmit along the chain: PTA—polyester chip—polyester filament—fabric—garments. The current violent swings in sales ratios are creating uncertainty for downstream fabric and garment manufacturers in cost calculations. Foreign trade orders typically lock in prices 2-3 months in advance; if raw material costs fluctuate frequently during this period, exporters' profit margins will be directly squeezed. Some exporters may shorten their quote validity periods or add price adjustment clauses to contracts, which in turn increases negotiation costs for both buyers and sellers.