Polyester Filament Sales Rate Plunges 29 Percentage Points: What’s Behind the Buyer Sentiment Shift?

On July 7, the average sales-to-production (S/P) ratio for polyester filament yarn (PFY) sample enterprises dropped sharply to 42.9%, a 29-percentage-point decline from the previous trading day. This means for every 100 tons of PFY produced, fewer than 43 tons were purchased by downstream buyers, leaving over half of the output sitting in inventory. Just one day earlier, the ratio had stood at a relatively healthy 71.9%.

Behind the Data: Market Sentiment Shifts

A closer look at the individual S/P ratios across 23 sample enterprises reveals extreme dispersion: the highest reached 200%, while the lowest was only 10%, with the median concentrated in the 30%-40% range. Only a handful of mills managed to achieve a balance of production and sales by offering discounts; the vast majority faced serious inventory buildup. This “ice and fire” scenario indicates that downstream users do not lack demand entirely, but rather have divergent price expectations. Some suppliers are willing to move volumes through price cuts, but most buyers are choosing to wait and see.

The sharp drop in the S/P ratio essentially reflects an intensifying price tug-of-war between upstream and downstream players. PFY is a critical raw material for fabric production, and its price volatility directly impacts the cost control of weaving mills. When upstream factories try to hold prices while downstream weavers anticipate a potential correction, purchasing behavior naturally shifts into “wait-and-see” mode. Once this sentiment takes hold, it creates a short-term demand vacuum, further increasing the pressure on upstream mills to destock.

Industry Chain Transmission and Regional Impact

The dramatic fluctuation in PFY S/P ratios has the most immediate impact on the weaving clusters in Jiangsu and Zhejiang provinces, including Shengze, Changxing, and Xiaoshan. The operating rates of water-jet looms and warp knitting machines in these areas are closely synchronized with PFY procurement. July is traditionally a slack season, with end-use garment orders already weak and fabric traders reluctant to build inventories. The sharp decline in the S/P ratio suggests that weaving mills are currently more inclined to consume existing raw material stocks rather than replenish.

On the cost side, PTA and MEG prices have diverged recently, providing no clear cost support for PFY. Profit margins in the upstream PX segment are also narrowing, and the entire polyester chain is undergoing a redistribution of margins. For fabric buyers, this adjustment often signals a potential further downside in PFY prices, but they must also be wary of a sudden cost-driven rebound that could raise procurement risks.

Practical Recommendations

For Buyers - Adopt a “staggered, dip-buying” strategy: avoid locking in large volumes at once. Late July to early August is typically a price trough for PFY; adjust procurement based on your own order cycle. - Monitor PFY varieties whose S/P ratio stays below 50% for three consecutive days—this is often a precursor to intensified discounting by upstream mills.

For Weaving Mills - Keep raw material inventory at 7-10 days; avoid overstocking. Use this window to negotiate “price guarantee” or “post-settlement” terms with suppliers, locking in processing fees rather than absolute prices. - Keep an eye on PTA plant maintenance schedules. If a wave of concentrated turnarounds occurs in late July, costs may stabilize, providing an opportunity to modestly increase procurement volumes.