Ningbo Shanshan Co.,Ltd (SHSE:600884) is in advanced talks to buy a stake in Chemical & Mining Co. of Chile Inc. (NYSE:SQM) according to two sources with direct knowledge of the matter. Shanshan is interested in buying over 30% of SQM, one source said, suggesting it may be looking to acquire Ponce's other shares as well as the Sociedad de Inversiones Pampa Calichera, S.A. stake.

Shanshan declined to comment and referred reuters to an announcement it made on August 18, 2016. Other companies may also be interested in acquiring a stake include CITIC CLSA Capital Markets Ltd, Israel Chemicals Ltd. (TASE:ICL), and Potash Corporation of Saskatchewan Inc. (TSX:POT), according to the sources familiar with the matter.