Green barrier, being under discussion in China, is one kind of non-tariff barriers. In contrast to other viewpoints in China, which consider that green barriers are unfair and form the obstacle to China's foreign trade, this paper points out that green barriers, evolving from the background of sustainable development theory and the principle of environmental protection, have positive effects on ideology, international institutional arrangement, and innovation stimulation. It demonstrates the reasons for the rationality of the existence of green barriers. Circular economy is a new production method. The best way to surmount the green barriers for Chinese government and enterprises is to implement circular economy and clean production so as to achieve the harmony of trade, environment and economic development.
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