A London School of Economics study finds Brazil & China should integrate their green steel supply chains. Brazil offers low-cost renewable energy & high-quality iron ore. China provides manufacturing scale & downstream processing capabilities. The research identifies a $140 per metric ton cost gap between traditional & green steelmaking. Policy intervention is essential to bridge this gap. Over half of Brazil’s blast furnace capacity requires relining by 2030, creating a pivotal opportunity for low-carbon technology adoption.