"Ren Jianxin, left, chairman of ChemChina and futur  Chairman of Syngenta and Erik Fyrwald, right, CEO of Syngenta arrive for a press conference of Syngenta after its acquisition by ChemChina, in Basel, Tuesday, June 27, 2017. The China National Chemical Corporation, or ""ChemChina"" has acquired the worlds biggest producer of agricultural chemicals, the Swiss agribusiness company Syngenta AG. (KEYSTONE/Laurent Gillieron)"
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