08:42 AM EDT, 10/23/2025 (MT Newswires) -- Rock Tech Lithium ( RCKTF ) Thursday said it expects to lower capital expenditures for the Guben lithium converter on the German-Polish border by about 50 million euros, or 6.9%.

The company now estimates the capex for commissioning the facility at about 680 million euros, a decrease from the previous estimate of 730 million euros.

Along with modeled operating expenditure reductions of about 23%, the changes are expected to improve the project's competitiveness and economic viability.

The cost reduction estimate resulted from a comprehensive review of all project components and targeted adjustments in several areas, including optimized plant design, adjusted storage capacities, process optimizations and updated supplier estimates.

Rock Tech also said it has signed a non-binding memorandum of understanding with Sichuan Calciner Technology for a potential collaboration on engineering and process optimization for the Guben facility.

Separately, the company said it plans to halt activities in Bosnia and Herzegovina and has terminated a joint venture with Arcore for the extraction of lithium-bearing ore, citing prioritization of capital and management attention on the Guben facility and other strategic initiatives.