On September 2, the average sales-to-output ratio of sampled polyester filament enterprises stood at 39.1%, down 0.7 percentage points from the previous trading day. This figure means that for every 100 tons of filament produced that day, fewer than 40 tons found buyers. What makes this notable is that the decline occurred against a backdrop of widespread price increases by manufacturers, creating a classic tug-of-war where sellers test pricing power while buyers vote with their feet, both waiting for the other to blink.
The Real Story Behind the Sales Data
The breakdown of sales-to-output ratios across sample enterprises shows extreme divergence: the lowest was 0%, the highest 310%, with most firms falling between 15% and 40%. The 310% outlier suggests that a few companies may have achieved over-selling through discounts or large orders, but this cannot mask the reality that overall velocity is below 40%. Placing this data in the context of consecutive daily reports, 39.1% is not an isolated low but reflects a sustained period of weak demand.
A ratio below 40% typically indicates that downstream weaving mills are actively destocking, shifting from need-based replenishment to wait-and-see spot buying. Since polyester filament is a core raw material for apparel fabrics, this signal may transmit upstream to PTA and MEG, and downstream to greige and finished fabrics. For buyers, the key question is whether this hesitation is short-term sentiment or a chain reaction from weakening end orders.
The Logic Behind Price Hikes Amid Weak Demand
Manufacturers choosing to raise prices during a demand slump may seem counterintuitive, but there is a rationale. On one hand, if upstream raw material costs are rising, filament producers face squeezed margins, and price hikes are a necessary pass-through. On the other hand, modest price increases can filter out non-essential buyers and leave room for future negotiations. However, when many firms raise prices simultaneously, the signal becomes diluted, and buyers are more likely to form a collective expectation to wait longer.
Given the sluggish transactions and the majority of users retreating to the sidelines, the game has reached a stalemate. The small-scale restocking by some users is likely driven by urgent orders rather than a trend reversal. This shift toward spot and zero-inventory purchasing will further pressure factory inventories, forcing some to sacrifice profits to maintain cash flow. For foreign trade firms, exchange rate volatility and shipping lead times amplify short-term price swings, making price locking significantly more difficult.
Transmission and Impact Along the Supply Chain
The low sales-to-output ratio of polyester filament first impacts the production scheduling of upstream polyester plants. If the ratio remains below 50% for a week, plants are likely to reduce output to balance supply and demand, which would be bearish for PTA. Next is the greige fabric sector: weavers, uncertain about raw material prices, will avoid long orders and maintain low inventory, which in turn suppresses the recovery of filament demand. Once this negative feedback loop forms, downside price risks outweigh upside potential.
From a regional perspective, the operating rates in major filament-consuming areas like Shengze and Changxing deserve close monitoring. Typically, one to two weeks after the ratio falls below 40%, greige fabric prices begin to follow downward, but finished fabric prices adjust with a lag. For brands and apparel buyers, this means the deflationary dividend from raw materials has not yet reached the end market. Now is not the optimal time to place orders, but it is wise to start negotiating price adjustment formulas with suppliers.