Polyester staple fiber prices are undergoing a quiet adjustment. According to publicly available industry data, on June 30, 2026, the benchmark price stood at 7,419.88 yuan per ton, down 0.43% from the previous day. This represents a cumulative decline of 5.26% from the beginning of the month (7,831.69 yuan) and a drop of over 11% from the year's high of 8,426.02 yuan. More notably, the current price is only 1,152 yuan above the yearly low of 6,267.17 yuan, while the median is 7,346.6 yuan, indicating that the price has slipped from the high range to the lower-middle band.
Behind the Price Slide: Supply-Demand Imbalance
This price drop is not an isolated event but a concentrated reflection of the mismatch between the capacity cycle and demand cycle in the chemical fiber industry. Over the past year, polyester staple fiber prices fluctuated between 6,267 yuan and 8,426 yuan, a range of over 34%. Although the current 7,419 yuan is still above the average of 6,962 yuan, the downward trend is clear. A monthly decline of 5.26% in June is rare in recent years, highlighting the combined effect of the off-season and rising inventory.
On the raw material side, PTA and MEG prices have also weakened, eroding cost support. On the demand side, operating rates at downstream spinning mills are generally low, and gray fabric inventories are high, leading to procurement that is strictly for replenishment. The 'buy on rising, not on falling' psychology has further amplified market wait-and-see sentiment.
Industrial Cluster Reactions: From Shengze to Keqiao
Price signals first ripple through industrial clusters. In Shengze, a major consumer of polyester filament and staple fiber, local weaving mills have begun to compress raw material inventory cycles, shortening the typical procurement cycle from 15 days to 7-10 days. In Keqiao's light textile city, fabric traders report delayed delivery of polyester-cotton blended orders, as downstream apparel brands become extremely sensitive to cost changes, squeezing negotiation margins to the limit.
Meanwhile, inventory pressure at staple fiber producers is rising. Public data shows that physical inventory days at major mills in East China have increased from 7 days in April to about 12 days in mid-June, approaching the warning line. Some producers have adopted a 'sell at lower prices to move volume' strategy, even offering forward contracts below spot prices, further depressing market expectations.
The Logic of the Mid-Range Price Zone
From an annual statistics perspective, the current price is in the 'median' range, but 'median' does not mean stability. The wide swing from 6,267 yuan to 8,426 yuan over the past year indicates a lack of a stable anchor. The top-side difference exceeds 1,000 yuan, and the bottom-side difference also exceeds 1,150 yuan, meaning the price has room to move in either direction, depending on future supply and demand.
For downstream buyers, the current price is not an absolute low. If overcapacity persists, prices may move closer to the 6,267 yuan low. If autumn demand picks up and some producers cut output, prices may stabilize around 7,000 yuan. This uncertainty requires companies to abandon single-point price judgments and adopt more dynamic procurement models.