The night trading session on July 3 saw broad gains across China's textile raw material futures, with polyester staple fiber and PTA leading the advance. The PTA 2609 contract rose 1.37% to 5,468 yuan per ton, while polyester staple fiber 2609 climbed 1.15% to 6,870 yuan. Cotton 2609 edged up 0.49% to 16,295 yuan, but cotton yarn 2609 added only 0.09% to 22,745 yuan. Bottle-grade chip 2609 also gained 0.55% to 6,574 yuan. This rally is not an isolated event but a concentrated realization of cost-pass-through logic within the polyester chain.
Cost-side drivers: the PX-crude oil linkage
PTA, as the hub of the polyester chain, directly reflects the tug-of-war between upstream PX and downstream polyester. The 1.37% gain in PTA is backed by a recent stabilization and rebound in international crude oil prices, which lifted PX costs. Industry data shows that the PX-naphtha spread has widened from around $300/ton in mid-June to over $350/ton, compressing PTA processing margins and strengthening mills' price-supporting stance. For spinners, rising PTA means higher production costs for polyester staple fiber, explaining its 1.15% follow-through gain. Notably, bottle-grade chip rose only 0.55%, indicating weaker demand elasticity outside the textile sector and a market preference for long positions in the textile chain.
Divergence between cotton and cotton yarn
Cotton rose 0.49% to 16,295 yuan, while cotton yarn barely moved up 0.09%. This widening spread signals profit pressure in the spinning segment. As the direct raw material, cotton's price increase has not been effectively passed through to cotton yarn, suggesting limited acceptance of higher-priced yarn among weaving and garment buyers. The textile industry is currently in a traditional off-season, with orders mostly small-batch and urgent, and mills are reluctant to build inventories. Cotton yarn futures lagging behind cotton also reflects market concerns about downstream destocking pace. If cotton continues to rise without cotton yarn following, spinners face expanding losses and may cut operating rates, which would in turn curb cotton demand.
Polyester chain dynamics: the narrowing PTA-staple fiber spread
The spread between PTA and polyester staple fiber is a key indicator of polyester spinning margins. In this session, PTA's 1.37% gain outpaced staple fiber's 1.15% rise, narrowing the spread from about 1,400 yuan to 1,380 yuan. For staple fiber producers, this means raw material costs are rising faster than product prices, squeezing processing profits. If this trend continues, mills may resort to production cuts to support prices. For downstream yarn and fabric buyers, there is a near-term risk of tighter staple fiber supply, especially as some polyester plants are scheduled for maintenance in July-August, which could exacerbate supply tightness.
Market outlook: speculative vs. fundamental forces
Open interest in PTA and staple fiber futures increased slightly during night trading, indicating growing speculative bullish sentiment toward the polyester chain. However, cotton yarn open interest remained stable, suggesting industry participants are still hedging rather than speculating. Two key variables will drive the market: first, whether crude oil can hold above $75/barrel, which directly determines PTA cost support; second, whether textile and apparel export data shows seasonal recovery in late July. According to China Customs data, textile and apparel export growth slowed to below 3% year-on-year in May, with weak external demand being a major cap on sustained raw material price increases. Thus, this rally is more likely a cost-driven oversold correction than a trend reversal.