The price barometer for the polyester filament yarn market is shifting. In early July 2026, Rongsheng Petrochemical (including Shengyuan) lowered its DTY polyester filament yarn quotes by 100-200 yuan/ton for multiple specifications. For instance, DTY 75/36 low-elasticity was quoted at 10,050 yuan/ton, DTY 150/48 at 9,150 yuan/ton, and DTY 300/96 heavy network at 9,250 yuan/ton. As a core supplier, Rongsheng's adjustment is not an isolated event but a necessary release of accumulated supply-demand contradictions in the industry chain.
Direct Triggers for Price Cuts
Data-wise, the direct background is weak downstream order support. Entering the second half of the year, the traditional textile off-season combined with slower overseas procurement has pressured weaving mill operating rates, leading to a wait-and-see attitude toward filament yarn purchases. Rongsheng's partial price cut essentially represents an active concession to exchange price for liquidity amid rising spot sales pressure.
Simultaneously, the polyester staple fiber market has been emotionally affected. On July 2, 2026, the main polyester staple fiber futures contract (2609) on the Zhengzhou Commodity Exchange fell 136 yuan/ton, with a notable increase in short positions. This bearish futures performance further reinforced a negative market outlook for the polyester segment.
Transmission Effects on Industrial Clusters
Textile clusters such as Keqiao and Shengze are major consumers of polyester filament yarn. After Rongsheng's price adjustment, local weaving mills face a dilemma: while lower raw material costs may improve short-term profit margins, the downward price trend increases inventory depreciation risk, prompting mills to further shorten procurement cycles.
Historical experience suggests that price adjustments by leading companies often trigger a chain reaction. If other polyester producers follow suit, it may spark a price war, compressing margins across the chain. This pressure is particularly acute for small- and medium-sized polyester producers, who lack scale advantages and struggle to absorb price cuts on the cost side.
Deep Signals from Supply-Demand Dynamics
This price adjustment reflects fundamental changes in the polyester supply-demand landscape. After the capacity expansion cycle of 2024-2025, the polyester filament yarn market has entered a phase of oversupply. Although some outdated capacity is being phased out, new capacity additions still outpace demand growth. Especially on the export front, uncertainties in global trade have increased volatility in textile export orders, further undermining support for raw material prices.
From a sentiment scoring perspective, polyester DTY and polyester filament yarn both received -1 (generally bearish), while polyester staple fiber scored -0.5 (slightly bearish). This quantitative assessment directly reflects market sentiment—short-term bearishness dominates, but panic selling has not yet emerged.