Since the signing of the Paris Agreement, the international community’s joint efforts have resulted in global renewable energy expanding at an accelerated pace and catastrophic temperature-rise scenarios being mitigated. However, extreme weather events continue to occur frequently worldwide, temperature increases have repeatedly reached new highs, and the climate situation remains extremely severe. Of particular concern is that total carbon emissions have increased rather than decreased, while high-emission industries such as steel and aluminum have made slow progress. How to enable industries such as automobiles to release low-carbon procurement price signals and guide raw-material supply chains such as steel and aluminum to accelerate decarbonization has become key to breaking the emissions-reduction bottleneck.