Polyester FDY Price Divergence: Regional Competition in an Oversupply Cycle

The price range for polyester FDY 150D/96F semi-dull grade in early July 2026 revealed a spread of over 4% among Zhejiang polyester plants. Rongsheng Petrochemical and Juxing Chemical quoted 8,300 yuan/ton, while Tongkun Group held firm at 8,650 yuan/ton—a difference of 350 yuan per ton. For weaving mills consuming dozens of tons daily, this variance can significantly impact monthly procurement budgets.

Industrial Logic Behind Price Divergence

The price gap is not random. Rongsheng's low-price strategy stems from its integrated industrial chain, leveraging the Zhejiang Petrochemical refining-cracking integration project to achieve high self-sufficiency in PX and PTA, giving it a cost advantage of several hundred yuan per ton. Tongkun, despite being an industry leader, has a different chain extension and invests more in differentiated products, justifying its premium pricing.

Zhejiang Tiansheng Chemical quoted 8,510 yuan/ton, Hangzhou Kaishi Chemical 8,550 yuan/ton, and Jiabao Fiber 8,310 yuan/ton—covering the entire spectrum from cost-driven to quality-premium pricing. This is not a simple 'lowest price wins' market; it reflects trade-offs among quality, delivery reliability, and service responsiveness for different customer segments.

Pricing Game in an Oversupply Cycle

The polyester industry is in a new capacity release phase. From 2025 to 2026, over 8 million tons of new polyester capacity came online, causing severe supply-demand imbalance in FDY. Under inventory pressure, some plants opt to cut prices to free up cash, while others try to maintain brand positioning through stable pricing.

This divergence is particularly evident regionally. Plants in Shaoxing, such as Juxing and Jiabao, quote closer to the 8,300 yuan/ton low, while those in Hangzhou, like Tongkun and Kaishi, stay higher. Shaoxing's traditional weaving cluster has more price-sensitive downstream customers, forcing local suppliers to adopt aggressive pricing.

From the procurement side, weaving mills face a 'buy on rising, not falling' dilemma. As FDY prices weaken, downstream restocking appetite is low, with many adopting just-in-time purchasing. This wait-and-see attitude intensifies price competition among plants.

Practical Impact on Downstream Weaving Mills

Price divergence means procurement decisions require granularity. For plants producing standard grey fabrics, choosing low-cost sources directly reduces costs; for high-end fabric makers requiring stable quality and batch consistency, brand premium may be worth paying.

For Buyers - Build a supplier price database to track daily spreads. When the gap exceeds 300 yuan/ton, prioritize the lower-priced source. - Focus on highly integrated suppliers, as their cost curves are flatter, offering better resilience during price downturns. - Negotiate long-term agreements with higher-priced suppliers to lock in quality while seeking discounts.

For Mills - Product differentiation is key to avoiding price wars; accelerate development of functional FDY variants. - Cut prices moderately within inventory control limits, but avoid excessive discounting that triggers industry-wide race to the bottom. - Use price divergence information proactively to offer customers comparative analysis, strengthening trust.