39.8% — that is not a comfortable number for the polyester filament industry on the first trading day of September. According to publicly available data from China's chemical fiber sector, the average production-sales ratio of sampled enterprises fell 43 percentage points from the previous trading day, nearly erasing all gains from the prior session's late-day surge. More notably, some producers had seen ratios spike to 300%-400% just a day earlier. The scissors gap between that pulse-like explosion and the subsequent sharp cooldown lays bare the gaming dynamics between upstream and downstream players.
After the Pulse, Why the Rapid Cooldown
Looking at the production-sales structure, the ratios across 23 sampled enterprises were highly dispersed: lows hovering in the 10%-15% range, highs touching 100%-150%. This divergence is no accident. In the previous session, some polyester filament producers concentrated shipments late in the day, with higher ratios reaching 300%-400%, directly pushing up quotes across most specifications. However, downstream users quickly pushed back against the price hikes, and inquiry activity visibly cooled.
Why was the downstream reaction so intense? The core issue is that end-user orders have not kept pace. The weaving sector is not simply facing a "slow-season production cut" but multiple pressures: order structure, profit margins, and cash flow. When raw material suppliers try to create a price-hike atmosphere through late-day volume surges, downstream players prefer to wait and see rather than chase prices. This means the pricing power of polyester filament is undergoing a subtle rebalancing.
Upstream-Downstream Transmission: Who Leads Price Expectations
From a supply chain transmission perspective, polyester filament price fluctuations are never isolated events. The cost support from upstream raw materials such as polyester chips, PTA, and ethylene glycol, combined with the absorption capacity of downstream demand from weaving and apparel, jointly determine the operating range of filament prices. The current situation is that upstream costs have not loosened significantly, but downstream acceptance of high-priced raw materials is declining.
For factories, the sharp swings in production-sales ratios mean greater uncertainty in production planning. If inquiries remain sluggish in the short term, some producers may be forced to adjust pricing strategies, trading price for volume. For buyers, the current price window is unstable, and chasing highs carries significant risk. However, if quotes pull back later, a phased restocking opportunity may emerge. For traders, such high-frequency volatility increases arbitrage difficulty, and the margin for error in quick in-and-out strategies is narrowing.
It is worth noting that among the sampled enterprises, only a few reached production-sales ratios above 100%, with most clustered in the 20%-40% range. This indicates that the market has not seen broad-based volume growth; the previous day's high ratios were more of a localized phenomenon than an industry-wide trend.
Differentiated Responses Across Regional Industrial Belts
From a regional perspective, textile industrial belts such as Keqiao, Shengze, and Nantong show varying sensitivity to raw material fluctuations. Shengze, a major chemical fiber weaving hub, reacts most directly to polyester filament price changes, with local weaving enterprises often quickly adjusting procurement rhythms after raw material price hikes. The Keqiao fabric market is more influenced by end-user apparel orders, with a certain lag in raw material price transmission. The Nantong home textile sector has relatively stable demand for filament but also faces profit squeeze.
This regional divergence means that a single price signal can hardly cover all industrial belts. Factories need to formulate differentiated raw material procurement strategies based on their own order structures and inventory levels, rather than simply following market quote fluctuations.