On August 31, the average sales-supply ratio of sampled polyester filament manufacturers reached 82.8%, a sharp increase of 48.1 percentage points from the previous trading day's close. Such a leap within a single day is uncommon for the year; it signals that cost-side pressure is penetrating the industrial chain, pushing downstream buyers from watchfulness to action.
Background
The sales-supply ratio essentially measures the day's sales against production, with values above 100% indicating inventory drawdown. On that day, sample data ranged from 40% to 260%, showing high dispersion, meaning not all mills recovered simultaneously; rather, some gained volume through pricing strategies or customer structure. The rise in the average was driven by polyester filament makers' reluctance to sell low amid cost pressure, while downstream buyers, fearing higher procurement costs later, made moderate replenishments.
Cost was the core driver of this jump. Fluctuations in raw material prices transmit directly to filament quotes; when upstream price hike expectations firm, filament factories tend to tighten discounts and control shipment pace. Downstream weaving mills face a dilemma: not restocking risks paying more later, but restocking risks losses if prices fall. On August 31, they chose the former, but deliberately kept volumes small, reflecting persistent caution.
It should be noted that the data come from sample enterprises and have limited coverage, yet a 48.1-percentage-point single-day increase is enough to indicate a phase shift in market sentiment. From an industrial belt perspective, such swings often first appear in concentrated polyester areas like Xiaoshao and Shengze, where local traders' quotes and order speeds change synchronously, influencing the pricing anchor of the national spot market.
Industrial Impact
The jump in the sales-supply ratio transmits differently across the chain. For filament factories, faster shipments ease inventory pressure and improve cash flow, but if cost support weakens, the low-price-hoarding strategy may quickly turn into discount destocking. Thus the sustainability of this recovery depends on whether raw material prices can hold.
For downstream weaving and texturizing enterprises, the value of the current restocking window is shifting. If the cost uptrend is confirmed, small replenishments now can lock in some cost advantage; but if raw materials spike and then fall, these inventories face depreciation risk. Industry public data show that price transmission in the polyester chain typically completes within one to two weeks, meaning the decision window is not wide.
From an export perspective, the recovery in filament sales-supply indirectly affects fabric export quotes. Overseas orders usually lock costs via fabric prices; if filament price hikes pass through to greige and finished fabrics, exporters' profit margins will be squeezed. More critically, sharp swings in the sales-supply ratio often presage increased price volatility, so exporters must incorporate exchange rate and raw material fluctuations into their quotation models, otherwise long orders may fall into the trap of rising revenue but falling profit.