MDI Price Divergence: North America Surges Over $700/Ton, China Remains Stable

The global MDI market is experiencing a rare and extreme divergence. In just eight days, North America saw three major chemical giants announce price hikes, with the largest single increase equivalent to over 5,200 RMB per ton. Meanwhile, the Chinese market remained calm, with spot prices fluctuating only narrowly. This divergence is driven by fundamental differences in capacity structure, trade patterns, and demand logic.

The North American Surge: A Supply Crisis Under Triple Pressure

The price hikes began in late May. Huntsman led on May 22, raising all MDI grades in the Americas by $0.24/lb, followed by a 3-4 week shutdown at its Geismar plant. Covestro triggered force majeure on May 28 due to a carbon monoxide unit failure, announcing a $0.22/lb increase effective July 1. BASF delivered the largest single hike on May 29, raising its Lupranate® series by $0.35/lb, and plans a 45-day maintenance shutdown in July. Cumulatively, these hikes exceed $0.8/lb, or roughly 5,800 RMB per ton.

The price surge has dual rigid support. A shortage of polyol raw materials has tightened the supply of polyurethane B-side components, making MDI irreplaceable for downstream insulation foam and spray foam industries. Crucially, downstream buyers locked in prices and stockpiled early, exhausting monthly spot supply. Pricing rules have also shifted from traditional monthly pricing to bi-weekly flexible negotiations, increasing price volatility. Institutions predict the momentum will extend into the peak Q3 season.

China's Stability: A Moat of Leading Capacity and Net Export

In stark contrast, China's MDI market remained stable in early June. For polymeric MDI, the benchmark price was around 16,733 RMB/ton on June 2, with East China domestic spot transactions at 17,000-17,500 RMB/ton. Wanhua Chemical's PM-200 ex-works price held firm at 15,000 RMB/ton. For pure MDI, Huntsman's June listing was 24,600 RMB/ton, while Wanhua's PM100 was around 23,000 RMB/ton, adjusting only slightly with domestic demand.

Two factors underpin this stability. First, Wanhua Chemical's domestic capacity exceeds 4 million tons per year, accounting for over 70% of China's total, with a 70,000-ton expansion in Fujian coming online. Its global market share approaches 40%. Ample domestic supply directly offsets any import price pressure from overseas gaps. Second, China is a net MDI exporter, allowing producers to balance domestic and export inventories. On the demand side, the home appliance and construction insulation sectors buy on a need basis, avoiding the panic stockpiling seen in North America.

Practical Recommendations

For Buyers - Avoid panic stockpiling; domestic supply is sufficient, and a major price hike in June is unlikely. Maintain normal procurement. - Monitor Wanhua's maintenance plans; any domestic plant turnaround could temporarily affect local supply. - With imported feedstock costs slightly rising, prioritize locking in long-term domestic contracts for a clear price advantage.

For Exporters - Rising overseas MDI costs will push up downstream polyurethane product prices in North America, creating potential demand for alternative sourcing. - Given China's net export position, producers may adjust export ratios; watch for fluctuations in export quotes. - Track the restart of overseas plants; if North American supply remains tight into Q3, Chinese MDI export prices may have upside potential.