In early July 2026, the polyester filament yarn market saw a critical price adjustment. On July 3, Rongsheng Petrochemical (including Shengyuan) cut DTY polyester filament yarn quotes by 100-200 CNY/ton across various specifications. Adjusted prices: 75/36 low-elastic at 10,050 CNY/ton, 100/96 light-net at 9,900, 120D/192F micro-net at 9,550, 150/48 low-elastic at 9,150, 150/96 low-elastic at 9,100, 300/96 low-elastic at 8,900, 300/96 light-net at 8,900, and 300/96 heavy-net at 9,250. As a core supplier, Rongsheng's price moves often set a benchmark. Though the cuts are modest, the signal warrants attention across the supply chain.
Supply-Demand Imbalance Drives Price Cuts
The direct backdrop is weak end-order support. Industry data shows that since Q2 2026, operating rates of downstream weaving mills have declined. In Jiangsu and Zhejiang, the average operating rate of water-jet looms dropped to around 65%, down about 8 percentage points year-on-year. Weak end demand has increased spot sales pressure and inventory accumulation. Rongsheng's DTY price cut essentially reflects inventory-driven correction. Notably, cuts vary by specification: 75/36 low-elastic fell only 100 CNY, while 300/96 heavy-net dropped 200 CNY, indicating greater destocking pressure for larger sizes.
Sentiment spillover is already visible. On July 2, the main contract of polyester staple fiber on Zhengzhou Commodity Exchange fell 136 CNY/ton, with increased short positions. Though staple fiber and filament yarn are different products, both suffer from weak textile demand and share raw material costs (PTA and MEG), creating price linkage. After Rongsheng's move, other major suppliers like Tongkun and Hengyi may follow, potentially triggering an industry-wide price decline.
Bearish Scores Reflect Market Pessimism
According to industry scoring, Rongsheng's price cut scores -1 (moderately bearish) for DTY and polyester filament yarn overall, and -0.5 (slightly bearish) for polyester staple fiber. The difference stems from demand structure: DTY is used in apparel fabrics with higher elasticity, thus more vulnerable during economic downturns; staple fiber goes into nonwovens and fillings with relatively rigid demand.
Historically, proactive price cuts by core suppliers signal the start of a destocking cycle. In H1 2026, new capacity continued to expand while demand contracted, worsening the supply-demand imbalance. China Customs data shows polyester filament yarn exports grew only 3.2% year-on-year from January to May 2026, far below the 8.7% in the same period of 2025, indicating external demand pressure.
Practical Advice
For Buyers - Adopt a wait-and-see approach in the short term, expecting larger price adjustments within 1-2 weeks as other suppliers follow. - Focus on large-spec DTY like 300/96, where price cuts may deepen, suitable for bulk lock-in. - Negotiate short-term floating price agreements with suppliers to avoid locking in high-priced orders during a downtrend.
For Exporters - Build price adjustment buffers into export quotes; consider weekly pricing to avoid contract losses from domestic price drops. - Monitor Southeast Asian markets; if domestic cuts widen, import prices in Vietnam and Indonesia may fall, requiring rapid export strategy adjustments. - Hedge risks using futures: short positions in PTA or staple fiber contracts on Zhengzhou Exchange can lock in raw material costs.
In summary, Rongsheng's price cut is not an isolated event but a symptom of upstream pressure transmitting downstream. Without clear signs of demand recovery, polyester filament yarn prices will remain under pressure, and all supply chain players should prepare for continued price declines.