In the early 1980's, It was called

In the early 1980's, It was called in the United Nations that: it is necessary to study the basic relations of the natural, the social, the ecological, the economic as well as the process of the use of natural resources, so as to ensure the sustainable development of the world." At this point, "sustainable development" caused widespread concern in all walks of life and identity on a global scale, our government have also put the sustainable development into the Agenda of 21st. in the near future, the economic cycle (Recycling Economy) refers to follow the natural ecosystems of material circulation and energy flow to follow the law of economic reconstruction, economic activities will be highly efficient and orderly organization as a "resource utilization - the green industry - renewable resources" closed Material energy cycle feedback processes, to maintain the economic production of low quality, low-waste, so that
the impact of economic activity on the natural environment damage to a minimum. It is different from the traditional economy of "high production, high emissions," but to achieve the goal of sustainable development which is "the exploitation of low-and high use, low emissions".