Lithium giant Sigma plans to invest nearly $100 million to expand its lithium concentrate production capacity in Brazil. On February 12th, Sigma Lithium, headquartered in Vancouver, Canada and primarily engaged in lithium mining and processing in Brazil, announced in a statement that it plans to invest R $492.4 million (approximately $99.4 million) in Brazil to expand its existing Grota do Cirillo spodumene project and build a new green lithium concentrate production plant, To increase the production capacity of lithium concentrate.