A 500 yuan per tonne gap for the same specification, same grade and same delivery region is more telling than the price itself. On September 24, 2026, semi-dull FDY 150D/96F AA-grade melt-spun yarn in Zhejiang quoted two anchors: Rongsheng Petrochemical at 9,400 yuan per tonne and Kaishi Group at 9,900 yuan per tonne. A spread exceeding 5% for an identical product on the same day in the same region suggests that pricing is shifting from cost-driven to inventory- and customer-structure-driven.
Where the Spread Comes From
The cash cost of melt-spun FDY is mainly composed of PTA, MEG and processing fees. When raw material volatility narrows, quoted spreads should normally shrink — yet the opposite is happening. Rongsheng Petrochemical, as an integrated leader with high self-sufficiency in PTA and MEG, prices closer to marginal cost plus a reasonable margin. Kaishi Group, as a chemical fibre sales entity, embeds more inventory cost and customer service premium from the trading chain.
This means the current FDY spread is not merely a cost difference but a structural divergence caused by varying degrees of vertical integration. Integrated players use low prices to secure operating rates and market share, while non-integrated players try to defend margins through quotes. The coexistence of these two strategies creates two parallel price systems for the same specification in the spot market.
For downstream weavers, this divergence is short-term positive for procurement bargaining but medium-term negative for supply stability. If low-priced supply continues to squeeze middleman margins, some traders may exit spot supply for this specification, ultimately pushing up future procurement costs.
How the Industrial Belt Is Reacting
Zhejiang is a core distribution hub for polyester FDY, with Hangzhou and Shaoxing hosting substantial melt-spinning capacity and trading houses. Industry public data shows that since the third quarter of 2026, FDY operating rates in East China have stayed above 80%, but procurement from downstream texturing and weaving segments has visibly slowed, with buying limited to immediate needs rather than batch stocking.
This combination of high operating rates and low stocking is a breeding ground for wider spreads. Mills face shipment pressure, traders face inventory pressure, and weavers have no inclination to chase prices. The result of this three-way game is a crack in the quotation system.
It is worth noting that 150D/96F is one of the most widely used FDY specifications, mainly for textured yarn used in silk-like fabrics, home textiles and some industrial fabrics. Price fluctuations in this specification transmit through the texturing stage to fabrics, but the efficiency depends on raw material inventory cycles at texturing mills. Current inventory levels are generally low, meaning that once FDY prices stabilise, the fabric end may feel cost changes within one to two weeks.
Implications for Procurement and Export
From a procurement perspective, a 500 yuan per tonne spread means roughly 5% optimisation space in raw material cost per tonne. For a medium-sized weaver consuming hundreds of tonnes monthly, this translates into tens of thousands of yuan in monthly procurement cost difference. However, low-priced supply often comes with stricter payment terms or longer delivery cycles, requiring buyers to balance price against supply chain flexibility.
From an export perspective, FDY price divergence indirectly affects the competitiveness of fabric export quotes. With overseas orders currently dominated by short and small batches and high customer price sensitivity, fabric mills that can lock in low-priced FDY gain several percentage points of room in quoting. But exchange rate volatility and freight uncertainty may offset part of this raw material dividend.
For mills, a wider spread is a double-edged sword. Low-price strategies can preserve operating rates, but sustained below-average quotes erode cash flow, especially when raw material procurement requires prepayment. The pressure on cash flow should not be underestimated.