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• The Chinese campaign is aimed at enforcing standards for waste imports after Beijing decided too many were unusable or even dangerous and would end up in its landfills. Under the crackdown dubbed Green Fence, China has rejected hundreds of containers of waste it said were contaminated or that improperly mixed different types of scrap.
• It is abruptly changing a multibillion-dollar global industry in which China is a major processing center for the world's discarded soft drink bottles, scrap metal, electronics and other materials. Whole villages in China's southeast are devoted to processing single products, such as electronics. Household workshops break down dis

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