From late August to early September, China's PTA supply side experienced a concentrated release. Honggang Petrochemical's two PTA units, totaling 5 million tons, restarted and ramped up production, with Unit 1 restarting on September 1 and Unit 2 already producing since August 26. This action signals a rapid recovery from the supply gap caused by previous maintenance, putting pressure on PTA spot prices. The futures market reacted in advance—on August 31, the main PTA contract on the Zhengzhou Commodity Exchange closed at 5,836 yuan per ton, up 152 yuan from the previous day, but industry insiders widely expect the supply increase to gradually materialize as a bearish factor.
Supply Changes: Maintenance Dividend Fades, Incremental Pressure Emerges
Both restarted units have a capacity of 2.5 million tons each, collectively accounting for a notable share of China's total PTA capacity. The timeline shows Unit 1 was shut down on July 3 and Unit 2 on July 1, with a maintenance period of about two months, during which supply contraction supported prices. Now, with the units restarting and loads ramping up, output will increase day by day, making spot market supply more abundant.
For the industry chain, PTA is the core raw material for polyester staple fiber, POY, DTY, and FDY. Increased raw material supply directly weakens cost support. Even if polyester plants have pre-stocked some materials, if downstream demand does not expand simultaneously, inventory pressure will transmit upstream, forming a negative feedback loop.
From industry experience, large-unit restarts often bring price adjustment windows. This 5-million-ton capacity release, coupled with possible load increases by other producers, may sustain supply pressure into early Q4. For polyester plants relying on spot PTA purchases, the cost curve may shift downward, but whether product prices adjust accordingly depends on the recovery pace of end orders.
Futures and Spot Linkage: Expectations Lead, Reality Awaits Verification
The futures market's performance is noteworthy. On August 31, the main PTA contract rose 152 yuan, seemingly contradicting the bearish supply increase, but actually reflecting market speculation on short-term supply-demand mismatches. On one hand, load ramping takes time, so actual output increments are not fully released; on the other hand, downstream polyester operating rates remain high, with just-in-time demand still present.
However, PriceSeek's bull-bear score of -1 clearly points to supply increases suppressing prices. This scoring logic is based on the supply-demand balance: without significant demand improvement, supply increases inevitably lead to marginal easing. The short-term futures rebound may have overextended, and if spot trading weakens and basis narrows, futures prices will likely revert to fundamentals.
For polyester products, weakened PTA cost support may passively expand profit margins, but only if product prices do not fall simultaneously with raw materials. In reality, polyester staple fiber, POY, DTY, and FDY all have bear-bull scores of -0.5, indicating market expectations of mild negative impacts. The reason is that looser costs reduce plants' willingness to hold prices, especially when demand is weak, raising the probability of price cuts to promote sales.
Industry Transmission and Regional Impact
The impact of this restart is not limited to PTA itself but will transmit along the chain to downstream polyester plants and weaving enterprises. Taking Jiangsu and Zhejiang as examples, as concentrated polyester production areas, local plants' raw material procurement strategies may become cautious, with rising wait-and-see sentiment. If PTA spot prices continue to weaken, polyester product quotes may follow downward, affecting the cost structure of end products like fabrics and yarns.
For foreign trade enterprises, raw material price fluctuations directly affect the competitiveness of export quotes. With multiple factors like RMB exchange rate and shipping costs intertwined, any change in cost may alter order profitability. Therefore, this restart is not just a supply-side event but a starting point for industry re-pricing.
Looking longer term, PTA capacity expansion has not stopped. After this restart, industry operating rates will recover, and if new capacity comes online as scheduled, oversupply risks may intensify. Polyester plants need to guard against inventory depreciation risks from falling raw material prices and use futures tools for hedging to lock in processing margins.