On August 31, the average sell-through rate of sampled polyester filament producers hit 82.8%, a jump of 48.1 percentage points from the previous close. Such a sharp single-day leap is rare in the chemical fiber market. But looking closer at the sample—ranging from 40% to 260%—this looks more like an emotion-driven pulse than a broad demand reversal. For buyers and mills, the key is not to marvel at the number but to judge how far this restocking rally can go.
Signals Behind the Numbers
The surge first stems from short-term cost support. Rising raw material prices squeezed polyester filament producers' margins, prompting them to hold back sales at low prices to pass on costs. Meanwhile, downstream users, fearing higher costs later, made small replenishments rather than large inventory builds. Such fear-driven buying usually lacks persistence.
The 26 sampled companies showed extreme divergence: some at 135%, 200%, even 260%, while others languished at 40% or 50%. High performers are mostly large suppliers with scale advantages and customer loyalty, absorbing concentrated restocking demand. Small and medium mills still hover around 50%, reflecting weak order support. This divergence suggests the recovery is not universal.
More concerning, this jump rides on the tailwind of cost support. Once raw material prices stabilize, the logic of holding back sales weakens. Industry data shows that inventory destocking across the polyester chain has been sluggish since late August, with some varieties still at mid-to-high historical levels.
Industrial Belt Reactions and Transmission
In key clusters like Shengze, Changxing, and Xiaoshan, factory shipment pace accelerated in the last week of August, but mostly driven by traders and weavers' tentative buying. Terminal apparel orders have not seen a synchronized uptick. This means the current rally is more about inventory transfer in the middle links than genuine end-consumer recovery.
For upstream PTA and MEG, a better sell-through rate is short-term positive, but if terminal demand fails to follow, raw material price hikes won't sustain. For downstream weavers, restocking now locks in current prices but also risks later price corrections. Historically, such sentiment-driven restocking cycles last one to two weeks before reverting to fundamentals.
From an export perspective, overseas orders remain constrained by high inventories and logistics costs, limiting direct export growth. This pulse is more about marginal improvement in domestic demand. If the 'golden September and silver October' peak season expectations fail, the restocked inventory will become a bearish factor in the next price negotiation.
Practical Recommendations
For Buyers - Purchase in batches to avoid chasing highs; split orders into 2-3 tranches to lock some volume while retaining flexibility. - Monitor cost variables: track PTA and MEG price trends; if raw materials stabilize or fall, delay restocking. - Prioritize large suppliers with stable sell-through rates to avoid quality fluctuations from small mills.
For Exporters - In overseas quotes, reserve room for exchange rate and freight fluctuations; avoid long-term fixed-price contracts amid volatile domestic prices. - Use the short-term domestic rally to accelerate inventory turnover and reduce capital occupation. - Track overseas end-demand data; only increase purchasing when clear restocking signals from Europe and the US emerge.
In summary, the August 31 surge is a resonance of cost and sentiment, and its sustainability depends on whether terminal demand materializes in September. Market participants should stay rational, anchor on data, and not be swayed by single-day volatility. Texcircle will continue to track industry dynamics for deeper insights.