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According to statistics by Angus Madison at the Groningen Growth and Development Centre, world population has increased four-fold, and the level of global GDP in 2000 was 19 times the level it was in 1900 (Maddison, 2008). This incredible expansion has exposed several kinds of environmental issues such as climate change, natural resource depletion, environmental pollution, and disposal of waste. In the 21st century, there has been further population growth and economic expansion centred on developing countries. It has been estimated that the global population will reach 9,150 million in 2050 (6,115 million in 2000), and the Global GDP will be about four times larger in the following 50 years, if the GDP growth rate will be an average of 2.8 percent annually. The above trend will greatly increase the pressure of resource consumption. Will resources on our planet continue to support this population and economic expansion?

Concept of Dual Traceable Ownership System (DTOS) as a Sustainable Design for Product Recycling