As recent as 13 November 2020 there was this article in The Nation/Thailand that reported on Bangchak's move to increase its investment into foreign lithium mines, including those in Argentina:

https://www.nationthailand.com/business/30397896?utm_source=category&utm_medium=internal_referral

"Bangchak Corporation Plc has diverted 18.5 per cent of its investment budget to foreign lithium mines with the aim to make battery for electric vehicles (EVs) and mobile telephones, the company’s president and chief executive officer, Chaiwat Kovavisarach, said"