The polyester filament market has received a new price signal. In early July 2026, Rongsheng Petrochemical (including Shengyuan), a leading supplier in the industry, reduced prices for several polyester DTY specifications by 100 to 200 yuan per ton. For example, 75/36 low-elastic yarn was quoted at 10,050 yuan/ton, 150/48 low-elastic yarn at 9,150 yuan/ton, and 300/96 heavy-net yarn at 9,250 yuan/ton. Although the adjustment is not drastic, it is interpreted as a clear signal of shifting supply-demand balance in the current market environment.
Supply-Demand Imbalance Drives Price Adjustment
The most direct backdrop for this price cut is the weaker-than-expected recovery in end-user demand. Feedback from weaving and garment production regions indicates that since the second quarter of 2026, downstream orders have seen limited growth, with foreign trade orders particularly sluggish due to a global consumption slowdown. As a core supplier in the polyester filament sector, Rongsheng's price adjustments often serve as a bellwether. This partial reduction directly reflects increased pressure on spot market sales and rising inventory levels. Industry data shows that social inventories of polyester filament have remained elevated for several consecutive weeks, with some specifications even experiencing stock accumulation. Downstream buyers generally adopt a wait-and-see approach, focusing on just-in-time replenishment rather than proactive stockpiling.
Futures and Spot Markets Converge, Bearish Sentiment Spreads
The price adjustment is not an isolated event. On July 2, the main polyester staple fiber futures contract (2609) on the Zhengzhou Commodity Exchange closed down 136 yuan/ton, a drop of about 1.5%, with a notable increase in short positions. This indicates that bearish sentiment in the polyester sector is intensifying. Although polyester staple fiber and filament are different subcategories, they share highly similar raw materials (PTA and MEG) and have overlapping downstream applications, leading to strong price correlation. Rongsheng's price reduction has further reinforced these pessimistic expectations, prompting additional short-selling in the staple fiber futures market. This resonance between futures and spot markets is putting downward pressure on the entire polyester chain's pricing center.
Weakening Cost Support Compresses Profit Margins
On the cost side, upstream raw material prices for PTA and MEG also showed weakness at the end of the second quarter of 2026. Fluctuating international crude oil prices have eroded cost support for the polyester chain. For polyester filament producers, lower raw material costs should theoretically provide some profit buffer, but weak downstream demand has caused product selling prices to fall even faster, squeezing processing margins instead. Rongsheng's price adjustment is essentially a passive response to the dual pressures of weak demand and falling costs. If terminal orders do not improve significantly in the short term, other polyester plants will likely follow suit with price cuts, potentially triggering a cycle of price competition within the industry.
Transmission Effects Across the Supply Chain
- For upstream PTA/MEG suppliers: Lower polyester filament prices will dampen raw material procurement intentions. Polyester plants may reduce operating rates, decreasing demand for PTA and MEG and exacerbating the oversupply situation at the raw material end.
- For downstream weaving and garment companies: Lower raw material costs are beneficial in the short term. However, if end-consumer demand remains weak, finished goods inventory pressure may transmit from the fabric stage back upstream, creating a negative cycle of "price cuts→wait-and-see→further cuts."
- For traders and intermediaries: In the current environment, inventory risk has increased significantly. Traders tend to adopt a fast-in, fast-out approach with shorter inventory cycles, with some even shifting to pure agency models to avoid price volatility risk.