TORONTO, Sept. 22, 2022 /PRNewswire/ – Avalon Advanced Materials Inc. (TSX: AVL) (OTCQB: AVLNF) (“Avalon” or the “Company”) “) is pleased to announce that it has signed a non-binding memorandum of understanding (the “MOU”) with LG Energy Solution (LGES; KRX: 373220) to supply LGES with a…