The polyester filament market is undergoing a classic cost-driven price softening. Since the third quarter, polymerization costs have been the core anchor for filament pricing, but this anchor has recently fallen from highs, significantly weakening cost support. Meanwhile, downstream weaving users are stocking far less than expected ahead of the double holidays, and filament makers' concerns about post-holiday inventory buildup are rising. Transaction centers have started to loosen. Quoted prices appear stable, but actual negotiation space is widening—this 'stable on the surface, declining in reality' pattern means the market is shifting from seller price-holding to buyer testing.
Cost Anchor Loosens, Pricing Logic Shifts
The decline in polymerization costs is the starting point of this price softening. Every fluctuation in filament prices during Q3 can almost be explained by the polymerization side. When polymerization costs were high, filament makers could maintain quotes even with weak demand, relying on cost support. But once this support weakens, their confidence in holding prices quickly erodes.
From the supply chain perspective, the cost decline first affects small and medium-sized filament mills with tight cash flow. These enterprises have shorter inventory turnover days and extremely low tolerance for post-holiday inventory buildup, so they are often the first to offer concessions in negotiations. Leading enterprises, with scale advantages and customer stickiness, adjust quotes relatively later, but actual transaction prices also face downward pressure.
This means pricing power in filament is shifting from the cost side to the demand side. The previous one-way logic of 'cost rises, filament follows' is being replaced by dual pressures of 'cost falls, demand weak, filament quietly declines.' For buyers, this signals expanding bargaining space; for mills, it is a warning of compressed profit margins.
Weak Holiday Stocking, Rising Post-Holiday Inventory Risk
The Mid-Autumn and National Day holidays have traditionally been stocking nodes for downstream weaving users, but this year's willingness to stock is notably weak. Industry public data shows that recently, the operating rates of downstream texturing and weaving segments have not shown the usual pre-holiday uptick, with some regions even seeing slight declines.
The reasons are not complex: end-use apparel and home textile orders have not yet seen the peak-season volume they should, weaving enterprises themselves have high finished goods inventory, and capital recovery pressure is significant. In this situation, downstream users prefer a 'buy as needed' just-in-time procurement strategy rather than locking in usage for the long holiday in advance.
For filament makers, this means the pre-holiday shipping window is narrowing. If downstream stops production during the holidays while filament plants continue normal operations, post-holiday inventory will inevitably accumulate. It is precisely this expectation that prompts some makers to actively concede on prices before the holiday to avoid passive price cuts afterward.
From the regional industrial belt perspective, the production-sales ratio of major filament bases in Jiangsu and Zhejiang has recently remained at a low level, and some factories have begun stimulating shipments through discounts and promotions. Such regional proactive destocking behavior often quickly transmits to the national market, forming a self-reinforcing downward price trend.
Intensifying Supply Chain Game, Future Direction Depends on Demand
The core contradiction in the current filament market is the叠加 of weakening cost support and insufficient demand absorption. On the cost side, if polymerization raw material prices continue to fall, the filament price center will shift further downward. On the demand side, if end-use orders fail to follow up promptly after the holidays, inventory pressure will force makers to increase concessions.
It is worth noting that the 'stable on the surface, declining in reality' strategy itself is阶段性. Keeping quoted prices stable is to maintain market confidence and customer expectations; actual transaction concessions are to preserve share in a highly competitive environment. This strategy is common during weak demand periods but difficult to sustain long-term—once inventory pressure breaks through a critical point, the quotation side will have to make more obvious adjustments.
For upstream polymerization enterprises, the quiet decline in filament prices will反过来 suppress their shipping pace, potentially triggering further concessions on the polymerization side. For downstream weaving enterprises, the loosening of filament prices reduces raw material costs in the short term, but if end-use orders remain sluggish, the benefit of lower costs will be offset by declines in finished product prices.