When was the circular economy idea first introduced in China? “As far as I know the idea of circular economy (CE) was first introduced in China in the late 1990s, by researchers and advocates who largely drew from the policies and practices that had already been applied in developed countries such as Germany and the US.”   What was the importance of the 2008 Circular Economy Promotion Law? What are the main principles spread by that document? “As my co-author and I mentioned in an article in Journal of Industrial Ecology in 2011, the law proclaims the CE as a major economic and social development goal for the country. The law has since played a central role in promoting the idea of CE both within the government, the wider economy and society, and providing legi...