SunSirs: China PP Spot Market: Continued Capacity Expansion Caps Upside Potential; Prices Fluctuated Within a Narrow Range in August

On August 14, 2026, the composite benchmark price for fiber-grade PP (as tracked by SunSirs) stood at 8,993.33 RMB/tonne, down slightly from the 9,020 RMB/tonne recorded on August 1. Overall price volatility narrowed, though prices remained in the mid-to-high range for the year. Quotes for available stock showed limited fluctuation, and market transactions were driven primarily by small-volume orders to meet immediate needs; bulk stockpiling was rare. Traders adopted a "wait-and-see" stance, and the tug-of-war between upstream and downstream sectors intensified.

An analysis of complete customs import and export data for the first half of 2026 reveals a fundamental shift in the industry's trade landscape, moving from a traditional net-import status to that of a net exporter. Cumulative exports of primary-form PP reached 2.5568 million tonnes in the first half of the year—a sharp year-on-year increase of 63.49%—with a monthly peak recorded in April. Production facilities in the Middle East, Japan, and South Korea faced constraints from both geopolitical issues and maintenance shutdowns, creating a supply gap that made low-cost domestic PP the preferred choice for overseas buyers. However, export volumes declined month-on-month in June as overseas shipments gradually resumed and the arbitrage window narrowed. On the import side, volumes contracted sharply, falling nearly 20% year-on-year in the first half of the year and remaining at low levels. This decline was driven by the concentrated release of integrated oil-based and coal-based production capacity, which significantly boosted domestic self-sufficiency and eroded the cost-competitiveness of overseas supplies; only small quantities of high-end, specialized grades continued to be imported sporadically. By August, overseas supply had begun to recover, leading to a month-on-month decline in domestic export shipment volumes; consequently, the diversion of domestic supply to export markets eased, resulting in a looser supply-demand balance in the domestic market.

Viewed against the backdrop of industry-wide capacity expansion, total domestic PP capacity has risen steadily over the past five years. The pace of new capacity coming online in 2026 was slower in the first half and accelerated in the second, with new facilities concentrated in the latter half of the year. Oil-based projects are clustered in coastal regions, while coal-based capacity is concentrated in the northwest, resulting in a persistent geographical mismatch between production and demand. Coal-based supplies from the Northwest continue to flow to other regions, with East and South China—key consumption hubs—consistently absorbing these external shipments. Conversely, Central and Southwest China face insufficient local production and rely heavily on long-term external inflows; this established logistics pattern continues to shape the focal point of regional spot market trading. New production capacity is largely focused on high-value-added grades—such as high-impact copolymers and thin-wall injection molding resins—to avoid the cutthroat competition and commoditization associated with general-purpose grades like yarn-grade resin. However, the oversupply of general-purpose grades remains a prominent issue, capping the potential for significant spot price increases.

Reviewing market dynamics since August, a temporary strengthening of upstream crude oil prices early in the month provided a cost floor, triggering a brief, modest rally; however, supply-side pressures quickly stifled these gains. Domestic plant operating rates remained moderate with limited maintenance activity, ensuring stable output. Coupled with a slowdown in export volumes, local inventories continued to accumulate. Downstream sectors—including plastic weaving, injection molding, and non-wovens—are in a seasonal lull; with insufficient growth in orders for finished goods, processors are purchasing strictly on an as-needed basis rather than stockpiling, showing little appetite for high-priced material. Divergence within the industry chain is evident: while general-purpose yarn-grade resin sees high circulation but weak trading, demand for high-value-added grades—such as modified automotive plastics and fibers—remains relatively stable, with prices showing greater resilience, leading to widening price spreads between categories.

On the cost front, crude oil prices have fluctuated within a narrow range, while naphtha and propylene prices have oscillated within established bands. Lacking a strong, unidirectional driver, costs provide only a floor of support rather than propelling spot prices upward. Inventory trends show regional disparity: factory stocks in Northwest production areas are steadily rising, whereas inventories in East and South China consumption hubs remain at standard turnover levels. Overall, there is no significant destocking, and inventory pressure is slowly shifting upstream.

Looking ahead, the anticipated release of new capacity in the second half of the year continues to limit upside potential. A substantial recovery in end-user demand is unlikely in August, and the loose supply-demand balance is unlikely to shift in the short term; consequently, spot prices are expected to continue fluctuating within a narrow range. Key factors to monitor for future market trends include the pace of recovery in overseas export orders, the progress of feedstock intake for new domestic production units, and the timing of inventory restocking by downstream sectors ahead of the traditional peak season; without a concentrated release of demand, it will be difficult for prices to embark on a sustained upward trajectory.

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