The European Commission announced the climate change plan named Fit for 55 on July 14, 2021, and proposed a draft of the carbon border adjustment mechanism plan CBAM. Cement, chemical fertilizers and power products must declare carbon emissions. After the border adjustment mechanism is officially implemented in 2026, importers must purchase certificates as payment for carbon emissions of imported products, and the price is calculated based on the average closing price of the EU’s weekly carbon rights auction。