On August 26, 2026, Wanhua Chemical announced that its Hungarian subsidiary BorsodChem had completed scheduled maintenance and returned its integrated production facilities to normal operation, bringing 400,000 tonnes per year of MDI and 250,000 tonnes per year of TDI capacity back into the European market.
The turnaround began gradually on July 17 and covered the MDI and TDI units as well as associated supporting facilities.
Wanhua had previously said the scheduled maintenance would last approximately 35 days and was intended to ensure the safe, stable and efficient operation of the facilities.
At the time, the company said the shutdown was part of its routine annual maintenance program and was not expected to have a material effect on Wanhua Chemical's overall production and operations.
With the maintenance now completed, the relevant BorsodChem units have returned to normal production.
Located in Kazincbarcika, Hungary, BorsodChem is one of Wanhua Chemical's most important European manufacturing bases and a major regional supplier of isocyanates.
Its facilities include approximately 400,000 tonnes per year of MDI capacity and 250,000 tonnes per year of TDI capacity.
Both products are fundamental raw materials for the polyurethane industry.
MDI is widely used in rigid insulation foams, construction materials, automotive applications, appliances, adhesives and elastomers.
TDI is primarily consumed in flexible polyurethane foams used in mattresses, furniture and automotive seating.
As a result, operating changes at large MDI and TDI facilities can have a direct effect on regional polyurethane supply availability.
The timing of the restart is also notable.
On August 18, BorsodChem announced price increases across several polyurethane product groups in Europe.
The company raised all MDI products by €200 per tonne, all TDI products by €350 per tonne and all polyol products by €300 per tonne, effective immediately subject to contractual terms.
BorsodChem attributed the increases to sharply higher raw material and energy costs in Europe.
That means the return of 650,000 tonnes of MDI and TDI capacity does not necessarily signal an end to the cost pressure facing European polyurethane producers and customers.
From a supply perspective, the restart restores capacity that had been temporarily unavailable during maintenance.
It should therefore improve BorsodChem's ability to supply European customers and reduce some of the temporary pressure created during the turnaround period.
However, the restart should not be confused with a capacity expansion.
The 650,000 tonnes of MDI and TDI capacity already formed part of Europe's existing production base.
The change is the return of temporarily offline supply, rather than the addition of 650,000 tonnes of new European capacity.
That distinction matters for the market.
During a major turnaround, customers may rely more heavily on inventories, alternative European producers or imported material.
As normal production resumes, some of that temporary sourcing pressure can ease.
Wanhua Chemical operates a much larger MDI and TDI manufacturing network in China, while BorsodChem provides the group with an important local European production platform.
The combination gives Wanhua manufacturing positions in both Asia and Europe and allows the company to serve customers through a more geographically diversified polyurethane supply network.
Local manufacturing is particularly relevant for MDI and TDI because customers place significant value on reliable supply and transportation availability.
European chemical producers have faced persistent pressure from relatively high energy, electricity, logistics and labor costs in recent years, prompting several companies to close, reduce or reassess regional production assets.
Against this background, BorsodChem remains an important large-scale isocyanate producer within the European polyurethane industry.
The price impact of the restart, however, will depend on more than physical supply.
While normal production improves availability, BorsodChem's recent price increases show that cost pressure remains significant.
If energy and feedstock costs remain elevated, improved supply alone may not translate into an immediate reduction in MDI or TDI prices.
The market will therefore be watching BorsodChem's operating rates after the restart, spot availability and whether the August price increases are successfully implemented across downstream contracts.
For Europe's polyurethane market, the end of the BorsodChem turnaround removes one important temporary supply constraint, while raw material and energy costs remain key variables for the next phase of MDI and TDI pricing.
