Davor Pisk, North America and Asia Pacific chief operating officer at Syngenta AG, left, speaks, as Ren Jianxin, chairman of China National Chemical Corp., centre, and Michel Demare, chairman of Syngenta AG, look on during a news conference to announce the ChemChina deal, delivered during the Syngenta AG full year results presentation in Basel, Switzerland, on Wednesday, Feb. 3, 2016. China National Chemical Corp. agreed to buy Swiss pesticide and seeds maker Syngenta for more than $43 billion in cash as the state-backed company extends its shopping spree with what would be the biggest acquisition by a Chinese firm. Photographer: Luke MacGregor/Bloomberg via Getty Images ***Local Caption *** Ren Jianxin; Michel Demare; Davor Pisk