In early August, the polyester chain futures experienced a rapid rise and fall: geopolitical risk premium quickly faded, and the bullish supply tightness of PX clashed with the bearish off-season demand. PTA main contracts hovered between an operating rate of 52.53% and social inventory of 2.0616 million tons. This narrow fluctuation reflects the market's repeated weighing of 'cost support' versus 'demand ceiling.'
Event Background
Geopolitical factors first stirred the market. News that Iran and Oman were close to a deal raised expectations of restored shipping through the Strait of Hormuz, pulling international oil prices down and quickly squeezing the risk premium from the cost side of the polyester chain. Early losses widened, but a rebound followed due to strong PX fundamentals, and contracts closed slightly lower across the board.
More critical is the supply constraint on PX. The impact of concentrated maintenance from late May to June is still unfolding; domestic PX operating rate was only 62.58% by the end of July, a historical low. Although some units at Zhongjin Petrochemical and Honggang Petrochemical plan to restart in August, the actual pace remains uncertain. Overseas, the North American summer gasoline season diverts aromatics blending demand, further tightening import supply. This tight PX supply transmits along the chain, providing solid cost support for PTA.
Industry Impact
PTA supply saw unexpected contraction. Yisheng Dahua's 3.75-million-ton No. 2 unit began technical upgrades, Xinfengming's 2.5-million-ton unit shut down, and three units totaling 8.5 million tons reduced loads to 70%, with no confirmed restart dates. As of August 4, PTA capacity utilization was only 52.53%. Low operating rates combined with rigid demand from polyester plants drove social inventory to decline for consecutive weeks. For the week ending July 31, PTA social inventory was 2.0616 million tons, down 213,000 tons week-on-week; July destocking exceeded 1.1 million tons, a clear tightening trend.
However, destocking did not translate into price gains. It is currently the traditional off-season for textiles, with widespread high temperatures and rain keeping Jiangsu and Zhejiang weaving operating rates at multi-year lows. Downstream mills generally maintain a 'buy-as-needed' strategy, lacking momentum for large-scale restocking. Terminal demand cannot effectively absorb raw material price increases, pressuring polyester chain product prices.
This means that even with significant supply contraction, the 'soft nail' of demand still limits rally heights. For polyester plants, low operating rates ease inventory pressure but also mean PTA purchases are mainly rigid, making trend-following demand unlikely. For PTA producers, destocking is positive, but if terminal orders remain weak, the sustainability of destocking is questionable.