A 150 yuan/ton spread for the same specification is unusual in polyester POY, a highly standardized category. On September 24, Rongsheng Petrochemical quoted 150D/48F semi-dull first-grade POY at 9,300 yuan/ton, while Zhejiang Yongsheng quoted 9,150 yuan/ton for the identical spec. The gap reflects genuine divergence in cost pass-through, inventory strategy, and market positioning—not random quoting noise.
Where the Spread Comes From
On the cost side, 150D/48F melt-spun POY derives over 85% of its production cost from PTA and ethylene glycol. Leading integrated players typically have captive PTA capacity or long-term contract pricing, giving them a 100-200 yuan/ton procurement advantage over external buyers. Rongsheng, as an integrated giant, quoting above Yongsheng suggests its pricing logic goes beyond cost-plus—it incorporates brand premium and acceptance testing among contract customers.
Regionally, Rongsheng's quote corresponds to Hangzhou delivery, while Yongsheng's corresponds to Shaoxing. Hangzhou's surrounding weaving capacity is dominated by warp knitting and home textiles, with relatively stable POY procurement rhythms. Shaoxing hosts numerous circular knitting and texturing firms that are more sensitive to raw material prices. Yongsheng's pricing close to the Shaoxing market reflects defensive pricing to retain local customers.
On the inventory cycle, late September marks the tail end of the traditional "Golden September." Weaving mills are typically wrapping up raw material stocking. Smaller producers face cash recovery pressure ahead of the National Day holiday, making them more willing to offer discounts. The 150 yuan/ton gap is essentially a collision between leading firms' price support and smaller mills' destocking within the same time window.
What It Means for Upstream and Downstream
For downstream weaving and texturing enterprises, the 150 yuan/ton raw material spread means a redistribution of processing profits. In texturing, POY-to-DTY processing fees typically run 1,500-2,500 yuan/ton. A 150 yuan/ton raw material difference directly amplifies or compresses 5%-10% of processing gross margin. Procurement decisions are shifting from "looking at total price" to "looking at spread sustainability." If the spread narrows short-term, firms that locked in lower-priced supply gain a temporary cost advantage.
For the upstream PTA and ethylene glycol markets, POY quote divergence signals demand-side stratification. Leading firms holding high prices suggests their contract customers have relatively full order books; smaller mills cutting prices to move volume implies weak spot demand for scattered orders. If this divergence persists, it could pressure PTA spot prices, as smaller polyester plants further slow raw material restocking.
For export markets, the 150 yuan/ton spread equals roughly 21 USD/ton—perceptible in export quotes but insufficient to reshape competitive dynamics. Southeast Asian buyers are price-sensitive but prioritize delivery stability and batch consistency. Leading firms' higher quotes may actually reinforce their quality endorsement for premium orders, while smaller mills' lower prices mainly attract cost-sensitive bulk orders.
Forward Outlook
Short-term, POY prices are likely to hold steady with a weak bias before the National Day holiday. Weaving mill holiday schedules will directly compress the procurement window from late September to early October. If polyester plant inventories accumulate during the holiday, a round of discount promotions is likely post-holiday. The Rongsheng-Yongsheng spread may first narrow and then re-widen, depending on how quickly each firm clears inventory.
Medium-term, Q4 marks the traditional seasonal transition for polyester filament yarn. If weaving stocking for "Double Eleven" and Christmas orders kicks off in mid-October, POY demand will find support, giving leading firms more confidence in price support. Conversely, if terminal apparel orders disappoint, the 150 yuan/ton spread could become a regular tool for smaller mills to capture market share.
Notably, the persistent spread for identical specs undermines POY's pricing efficiency as a standardized commodity. For buyers, this means shortening the price comparison cycle from monthly to weekly; for mills, customer sensitivity to spreads is rising, and relying solely on low prices to win orders is becoming less viable.