manufactured · input
Refractory Materials (furnace lining)
AZS (alumina-zirconia-silica) fused cast refractories, silica crown bricks, and checker refractories used to line glass melting furnaces. Furnace rebuild requires 6,000–15,000 tonnes of specialty refractory materials and 6–12 months of installation work. China produces 40% of global specialty refractories; RHI Magnesita (Austria) and Saint-Gobain (France) are major Western suppliers.
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1 essential American goods rely on refractory materials (furnace lining) somewhere upstream in their supply chain.