From the ann "Based on an estimated cost of production of...

From the ann
"Based on an estimated cost of production of US$550/t, transport costs, Jiangte estimated conversion costs, import and sales
taxes, a spodumene concentrate grade of 6.1% and 83% lithia recovery rate. The gross operating margin for Alliance, for tonnage
processed by the Joint Venture, would increase from about 36% to 63% when compared to our current spodumene pricing
formula based on market prices for lithium carbonate, excluding royalty and tax provisions."

The gross operating margin could increase up to 36% to 63% sounds pretty good to me.
Gltah cheers!!