产能扩张高峰已过供需关系将好转：聚酯产业链专题报告

Report Industry Investment Rating No relevant content provided. Core View of the Report PX, PTA, and ethylene glycol have all experienced a peak in rapid capacity expansion in the past 5 - 6 years, but the capacity growth rate in 2025 significantly declined compared to the previous peak. The production growth rate of PX and PTA also dropped notably. Polyester products, being closer to the downstream, have shown a steady overall growth in capacity. Although the capacity growth rate in the past two years has also slowed down, the decline is not as significant as that of PX, PTA, and ethylene glycol. It is expected that in 2026, the polyester capacity will continue to grow moderately, while the capacity growth rate of mid - upstream products will slow down significantly. In the long - term, the supply - demand situation of the industrial chain will generally improve [9]. Summary According to the Table of Contents 1. PX Enters the Stage of Low - Capacity Growth with Limited Room for Utilization Rate Increase - PX new device production may be postponed due to strict control of refining capacity: From 2019 - 2023, affected by the commissioning of private refining and chemical integration devices, PX new devices were intensively put into production, with the capacity growth rate exceeding 20% in multiple years. Since the second half of 2023, no new PX devices have been commissioned. In September 2025, the Ministry of Industry and Information Technology and other seven departments issued a work plan, requiring strict control of new refining capacity and reasonable determination of the scale and pace of new PX capacity. Some large - scale PX devices planned for 2026 - 2028 may be postponed. Even if they are commissioned as scheduled, the capacity growth rate will significantly decline compared to the 2019 - 2023 peak [14]. - PX utilization rate is difficult to increase significantly due to maintenance needs: PX devices need regular maintenance, and the maintenance time is usually longer than that of PTA, resulting in a certain amount of maintenance loss every year. The PX utilization rate fluctuates throughout the year, and the high - utilization rate usually lasts for no more than three months. In recent years, the average annual utilization rate has been around 81.5%, and it is expected that there will be limited room for further improvement in 2026 [18]. 2. In 2026, PTA Enters a Gap Period of New Capacity Commissioning, and the Utilization Rate Affects Supply - The pressure of PTA capacity growth eases as there are no new device commissioning plans in 2026: From 2019 - 2025, China's PTA capacity continued to expand, with high growth rates in some years. In 2025, three new PTA devices were commissioned, with a net increase in capacity of 7.5 million tons per year. In 2026, there are no new PTA device commissioning plans, and although there are multiple devices planned for 2027 - 2028, the overall capacity growth rate from 2024 - 2026 is relatively low [20][23]. - PTA utilization rate has room for increase due to production efficiency: This year, the PTA spot processing fee has been poor, which generally affects the industry's utilization rate. In 2025, the average PTA utilization rate was 78.4%, a decrease of 4 percentage points from the previous year. In 2026, on one hand, the supply growth pressure is reduced due to no new device commissioning; on the other hand, there is potential for the utilization rate to increase and boost production [24][25]. 3. Ethylene Glycol New Devices Are Scheduled to Be Commissioned at the End of Next Year, and the Supply Growth Pressure Is Expected to Be Limited - Some ethylene glycol new devices may be postponed: From 2020 - 2023, the ethylene glycol capacity growth rate was high, but it significantly declined from 2024. In 2025, the capacity increased by 1.4 million tons per year, with a growth rate of 4.6%. From 2026 - 2027, there are still many new device commissioning plans, with a total planned capacity of 5.35 million tons per year. However, due to poor production efficiency, some devices may be postponed. In 2026, only Huajin Aramco's 400,000 - ton - per - year device is planned to be commissioned in the first half of the year, so the new - capacity pressure in the first half of the year is small, while the market will focus more on the commissioning of new devices in the second half of the year [29][30]. - There is still potential for the ethylene glycol utilization rate to increase: This year, the profit of oil - based ethylene glycol has improved compared to last year, and the profit of coal - based ethylene glycol was good before July, promoting an increase in the utilization rate. In 2025, the average utilization rate of oil - based ethylene glycol increased by 2.6 percentage points, that of coal - based ethylene glycol increased by 4.9 percentage points, and the comprehensive utilization rate was 59.7%, an increase of 3.4 percentage points from last year. The ethylene glycol production increased due to factors such as a slight increase in capacity, an increase in utilization rate, and a significant increase in imports. Although there are many new device commissioning plans in 2026, the actual supply increase may be limited, and there is limited room for the utilization rate to continue increasing [33][34]. 4. Outlook In 2026, the capacity growth rate of PX, PTA, and ethylene glycol will continue to slow down. PTA capacity is expected to have zero growth, and the supply pressure will be small. Polyester capacity is expected to maintain a certain positive growth due to economic growth and reduced uncertainties in exports. The demand for polyester raw materials will slightly increase, and the supply - demand relationship will gradually improve. The low - price and low - profit state of the polyester industrial chain is expected to improve, and the certainty of improved production profit is relatively high [39].