Acrylonitrile Surges 5.25% in a Day, Signaling Divergence in Chemical Fiber Feedstocks

The August 4 price monitoring data for textile bulk commodities reveals a striking signal: acrylonitrile jumped 5.25% in a single day, with a year-on-year increase of 51.05%, while polyester filament FDY and POY fell 2.33% and 2.13% respectively. The scissors gap between rising feedstock and falling finished goods indicates that the cost transmission chain is encountering an obstruction somewhere.

Event Background

Among the 17 monitored textile bulk commodities that day, only three rose, two fell, and the remaining twelve were flat. The top gainers were acrylonitrile (+5.25%), PTA (+2.20%), and polyester staple fiber (+0.41%). On the losing side, polyester FDY led with -2.33%, followed by POY at -2.13%. Year-on-year, acrylonitrile surged remarkably, PTA rose 28.10%, while polyester staple fiber gained only 16.20%. Filament products showed year-on-year increases around 20% but fell against the trend on that day.

This divergence is not accidental. Acrylonitrile, a core feedstock for acrylic fiber and ABS resin, often jumps due to supply-side contraction or plant maintenance. PTA's rise is more linked to crude oil fluctuations and PX costs. In contrast, the decline in polyester filament prices suggests that downstream weavers are increasingly reluctant to accept high raw material costs, and inventory pressure is forcing polyester plants to cut prices to stimulate sales.

Industry Impact

The divergent trends between feedstock and finished goods have distinct impacts across the chain. For acrylic fiber producers downstream of acrylonitrile, a 5.25% single-day rise in raw material costs sharply compresses profit margins. If acrylonitrile remains high, acrylic fiber makers may face a squeeze between limited price pass-through and weak demand, potentially forcing some small and medium enterprises to reduce output.

For the polyester filament industry, the decline in FDY and POY is a warning sign. Although year-on-year gains still exceed 20%, a daily drop of over 2% is uncommon and typically reflects weak downstream buying interest, with weavers and traders adopting a wait-and-see stance. Polyester staple fiber's slight rise of 0.41% contrasts with filament, possibly due to rigid demand in nonwovens and filling applications.

Notably, cotton yarn, viscose staple fiber, and spandex all remained flat, indicating an overall stalemate. Raw silk fell 9.14% year-on-year, the only decline among all monitored items, linked to cyclical supply increases in sericulture. This also suggests that foreign trade price negotiations for silk products may face downward pressure.

Practical Advice

Facing the divergence between raw material and finished product prices, different chain segments need differentiated strategies.

For Procurement Teams - With acrylonitrile prices high and volatile, shorten procurement cycles for acrylic-based materials, adopt a small-batch, high-frequency approach, avoid concentrated restocking at price peaks, and monitor plant maintenance schedules to anticipate short-term trends. - Polyester filament prices are softening; if downstream orders are not yet locked, consider delaying purchases until prices stabilize. However, be cautious of cost support from rising PTA, and avoid excessive bearishness.

For Foreign Trade Enterprises - For polyester fabric export orders, the current price correction window may allow locking in forward contracts with suppliers to hedge against raw material volatility; also monitor RMB exchange rate changes for export pricing. - Exporters of raw silk or silk products, given the nearly 10% year-on-year decline, should leave room for negotiation in quotes and pay attention to production data from major sericulture regions to avoid passive price cuts due to ample supply.