Chile's development agency, Corfo, has asked the country's antitrust regulators to block the sale of Nutrien 's stake in lithium producer Sociedad Quimica y Minera de Chile (NYSE: SQM), or SQM, to China's Tianqi Lithium "on the grounds that it would give China an unfair advantage in the global race to secure resources to develop electric vehicles," according to an exclusive report by Reuters on Friday.