Investor Presentaiton

Refractory applications Industrial division Project businesses RHI MAGNESITA Customer industries Steel 69% of revenues Main application Basic oxygen furnace, Electric arc furnace, ladles, flow control Lifetime and costs ⚫ 20 minutes to 2 months c.3% of customers' costs ⚫ Annually c. 0.5% of customers' costs Refractory characteristics ⚫ Part of customers' operational expenditure • Systems and solutions for complete refractory management • Demand correlated to output Cement/Lime 12% of revenues Non-ferrous metals 8% of revenues Glass & Energy. Environmental, Chemicals¹ 9% of revenues Rotary kiln Copper flash smelter Glass furnace Investor Presentation | March 2024 Secondary reformer 1 • 1 to 10 years c. 0.2% of customers' costs • Up to 10 years c. 1% of customers' costs ◆ Part of customers' capital expenditure • Longer replacement cycles based on project driven demand • Complete lining concepts including refractory engineering • Wide areas of application • 5 to 10 years • c. 1.5% of customers' costs 1. Includes revenue from mineral sales 4

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