On July 8, 2026, the polyester filament yarn (PFY) industry posted a seemingly impressive performance: the average sales-to-production ratio among sample enterprises surged to 103.6%, a 60.7 percentage point jump from the previous trading day. This figure is rare in the past three months, directly challenging the previously persistent bearish market expectations. However, a closer look reveals a more complex picture behind this data.
Cost Side: Co-Movement of Crude Oil and Polyester Raw Materials
The most direct driver of the July 8 sales spike came from a sudden surge in upstream costs. International crude oil prices saw a notable jump that day, pushing up prices of naphtha, PX, and other polyester intermediates. The rapid rise in raw material costs quickly transmitted to the PFY segment, with mills proactively raising offers. According to publicly available industry data, factory prices for mainstream PFY varieties were generally increased by 50-100 yuan per ton. What does this mean? For downstream weaving mills, it was a clear signal of a price hike expectation—if they did not restock at current levels, future procurement costs would be higher. This 'buying on rising prices' psychology drove the July 8 sales volume surge. However, it is worth noting that this cost increase did not stem from strong demand pull but from short-term fluctuations in upstream supply, making its sustainability highly uncertain.
Divergence in Sales Data: Not a Universal Recovery in Restocking
Despite the overall ratio exceeding 100%, individual enterprise data showed extreme divergence: the highest reached 300%, while the lowest was only 10%. This huge gap indicates that downstream restocking was not a universal 'panic buying spree' but a highly selective 'risk-averse procurement'.
- Enterprises with a 300% sales ratio: likely large weaving mills with stable order books or major clients with long-term supply agreements. They are less sensitive to price fluctuations and tend to complete full stockpiling early in a price rise cycle.
- Enterprises with a 10% ratio: reflect the real predicament of many small and medium-sized weaving mills—weak end-orders and tight cash flow. Even when seeing price hike signals, they lack the capacity or willingness for large-scale procurement, preferring to 'procure based on production' to avoid inventory buildup risks.
The deeper implication of this divergence is that the PFY market recovery is not driven by final consumption but by a cost-expectation-led 'pulse-like' restocking. Once crude oil prices retreat, this restocking momentum will quickly fade, and the industry may return to a stalemate of high inventories and low sales.
Supply Chain Dynamics: The 'Dammed Lake' Effect of Cost Pass-Through
The core contradiction facing the PFY industry is a clear 'dammed lake' in the cost pass-through chain. Upstream raw material prices like PX and PTA fluctuate frequently due to crude oil movements, but downstream weaving, dyeing, and garment segments struggle to raise prices simultaneously due to weak end-demand. This forces PFY mills to bear most of the cost pressure—if they do not raise prices, profit margins shrink; if they do, downstream procurement appetite weakens further.
The July 8 sales spike was essentially a concentrated release of this contradiction: downstream mills, panicked by the 'buy now or pay more later' mentality, were forced into a concentrated restocking round. But the sustainability of this restocking is questionable. Historically, such cost-driven sales pulses typically last only 1-3 trading days before the market reverts to fundamentals. For industry participants, the key indicator for judging subsequent trends is not a single day's sales ratio but the persistence of sales over the next week and the recovery of downstream orders. If the sales ratio quickly falls below 60% on July 9-10, the July 8 surge will prove to be a flash in the pan.