Polyester DTY Price Divergence: Cost Transmission Failure or Intensified Regional Competition?

The same specification of polyester DTY saw a price spread of 150 yuan/ton between two major suppliers on July 3, 2026. Rongsheng Petrochemical quoted 9150 yuan/ton, while Zhejiang Juxing Chemical Fiber offered 9000 yuan/ton. This spread is high compared to the past six months, occurring when raw material PTA and MEG prices fluctuated less than 2%.

Signs of Cost Transmission Failure

PTA and MEG account for 75%-80% of the direct raw material cost of polyester DTY. From mid-June to early July, PTA domestic prices stayed in the 5500-5600 yuan/ton range, and MEG fluctuated narrowly around 4400-4500 yuan/ton. Using a standard cost model, the raw material cost for 150D/48F DTY is around 6800-7000 yuan/ton. Adding processing costs (depreciation, labor, energy) of about 1800-2000 yuan/ton yields a theoretical total cost of 8600-9000 yuan/ton.

Rongsheng's 9150 yuan/ton implies a gross margin of 150-550 yuan/ton, while Juxing's 9000 yuan/ton is near the cost floor. This divergence indicates that when raw material prices are stable, downstream pricing power is no longer uniformly determined by cost but is increasingly influenced by regional supply-demand dynamics and supplier strategies.

Regional Industrial Belt Dynamics: Hangzhou vs. Shaoxing

Rongsheng is based in Xiaoshan, Hangzhou, while Juxing is in Shaoxing. Both are in Zhejiang's chemical fiber belt, but their market positioning differs. Xiaoshan hosts large integrated petrochemical-fiber companies like Rongsheng and Hengyi, which have longer value chains (from refining to spinning) and greater risk resilience, often leading to rigid pricing.

Shaoxing is China's largest textile fabric production base, with dense downstream weaving enterprises highly sensitive to raw material prices. As a local supplier, Juxing tends to use low pricing to secure local weaving customers, especially small and medium-sized mills. These customers, facing thin profit margins on orders, react swiftly to price differences of 50-100 yuan/ton.

This regional price divergence reflects a strategic game between large integrated players (protecting margins) and regional mid-sized firms (protecting capacity utilization).

Practical Impact on Downstream Buyers

For a weaving enterprise consuming 500 tons annually, a 150 yuan/ton price difference translates to over 75,000 yuan in procurement cost variance. Given that fabric and greige margins are typically 5%-8%, this represents 1-2 percentage points of net profit fluctuation.

Short-term, buyers should watch two signals:
- If PTA prices drop trendily (over 3%), the DTY price gap may narrow quickly as cost declines free up room for all suppliers to cut prices.
- If weaving capacity utilization in Shaoxing (currently ~65%) continues to fall, regional quotes like Juxing's may face further pressure, potentially widening the spread to over 200 yuan/ton.

Operational Recommendations

For Procurement Teams - For single orders over 100 tons, prioritize inquiries to Shaoxing-based suppliers to leverage regional competition for lower quotes, but verify inventory lead times to avoid delivery delays. - For orders requiring high consistency (e.g., export fabrics), continue sourcing from major mills like Rongsheng for better batch stability. - Monitor the gap between Rongsheng's monthly settlement price and spot price: if it exceeds 100 yuan/ton, it signals the large supplier's intention to support prices, suggesting increasing spot procurement.

For Foreign Trade Companies - Use 9150 yuan/ton as the cost baseline when quoting overseas, reserving at least 100 yuan/ton profit buffer to avoid losses from domestic price fluctuations. - If clients require FOB including raw material costs, consider floating price agreements with Shaoxing suppliers (based on PTA futures plus fixed processing fee) to lock in processing margins. - Track DTY inventory days in Shaoxing and Xiaoshan: when inventory exceeds 15 days, regional spreads typically widen to over 200 yuan/ton, signaling a window to lock in low prices.