Regarding carbon-taxing and border tax adjustments as carbon tariffs is a misunderstanding. As a matter of fact,carbon tax is an internal tax in essence. Internal tax is a special-purpose concept corresponding to tariff under WTO rules. Internal tax is significantly different from tariff. Both of them are subject to different regulations and obligations respectively. More and more countries in the world have been paying more attention to the research and implementation of border tax adjustments of environme...