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Environment: Discarded cellphones pose big problem

The rapid development of technology leads to frequent personal turnover of mobile phones. About 50 percent of users in China change to a new phone every 18 months, according to Chinanews. However, alongside the high replacement rate is a low recycling rate. China now has about 1 billion used mobile phones, but only 2 percent have been recycled, with most of the rejected devices improperly handled.