Zinnwald Lithium plc confirmed that production of battery grade lithium hydroxide (‘LiOH') from Zinnwaldite concentrate is technically and economically viable at its Zinnwald Lithium Project (the ‘Project') in Germany, having completed a pilot scale test work programme. The test work also confirms the potential to produce economically significant amounts of commercially saleable co-products, such as high-purity potassium sulphate (‘SOP') and precipitated calcium carbonate (‘PCC'). Overview: Pivoting the Project to focus on battery-grade lithium hydroxide as a primary product to better align with the requirements of European off-takers, economic, technical, and commercial analysis of test work undertaken indicates that annual lithium hydroxide production above 10,000 tons could be viable from the core Zinnwald Project, test work also confirms that economically significant amounts of high-quality by-products, SOP and PCC, can be produced, and the results from the successful tests will be applied in basic engineering and will be utilised in an updated feasibility study.