When the polyester staple fiber (PSF) industry operates above 70% capacity yet processing margins remain squeezed into losses, the joint output-cut self-rescue plan launched by major producers on August 15 is essentially a supply-side experiment betting on the 'Golden September' demand peak. The outcome will not only determine PSF profit recovery but also transmit through the chain to yarn, weaving, and fabric end-markets, reshaping Q4 pricing logic.
Cost and Supply Dynamics
The upstream market shows a differentiated but firm pattern. For PTA, delayed restarts of two core units and port disruptions due to rainfall in East China pushed spot basis to nearly 300 yuan/ton, with August social inventories expected to hit a 44-month low, providing solid cost support for PSF. MEG similarly strengthened, with East China port inventories falling to a 15-year low and spot premiums reaching as high as 540 yuan/ton in early August, driven by Middle East tensions and concentrated maintenance. However, caution is warranted: planned restarts of PTA and MEG units in September will increase upstream supply, potentially weakening cost support.
Impact of Output Cuts
This round of cuts is proactive market adjustment, unlike passive shutdowns from equipment failures. Some plants have already reduced loads, with deeper cuts expected in late August and a concentrated implementation and maintenance period in September. Leading enterprises in Jiangsu, Zhejiang, and Fujian—covering mainstream direct-spinning capacity—are all participating. If discipline holds, industry operating rates could fall from 70.36% in July to around 67%, cutting monthly supply by about 30,000 tons and significantly easing spot oversupply. In the short term, supply contraction plus low inventories of some branded sources provide clear price floor support, leaving room for processing margin recovery.
Demand-Side: Keqiao Market Signals
As a core fabric trading hub, Keqiao Light Textile City saw reduced gray fabric transactions in August, with weavers and traders cautious, operating rates low, and purchasing on an as-needed basis. PSF-based fabric sales were mostly small and scattered orders, with limited follow-through from export orders. This suggests upstream price increases face significant resistance in transmitting downstream, and fabric price hikes are difficult. Whether the 'Golden September' scenario materializes depends on Keqiao transaction activity—actual growth in new and repeat orders, and whether weavers shift from rigid restocking to active inventory building. Without effective market recovery, the price-boosting effect of output cuts will be greatly diminished.
Outlook: Oscillating Recovery, Not a One-Way Rally
In summary, from late August to early September, output cuts should stabilize and strengthen the market, gradually repairing processing margins. In mid-to-late September, the market will oscillate between weakening costs and demand recovery expectations. The biggest risk is supply rebound after profit recovery—price upticks may loosen cut discipline, and delayed capacity could still be released, capping margin recovery. Participants should track the actual implementation of cuts, upstream unit restarts, and key indicators like yarn mill operating rates, terminal orders, and Keqiao gray fabric transactions to validate real demand.