Hydro Lithium Inc. is a South Korean industrial materials and specialty chemicals company specializing in the manufacture of high-purity battery-grade lithium compounds and specialized civil engineering structural products. Founded in 1995 and headquartered in Gwangju-si, Gyeonggi-do, South Korea, the company operates through two primary business divisions: Lithium Materials and Construction Engineering. In its Lithium Materials segment, the company produces, refines, and supplies battery-grade lithium hydroxide monohydrate; battery-grade lithium carbonate; and ultra-pure lithium chemical precursors for use in secondary batteries for electric vehicles (EVs) and energy storage systems (ESS), utilizing proprietary CULH (Continuous Ultra-pure Lithium Hydroxide) chemical refining and CULX (Continuous Ultra Lithium Extraction) technologies. In its Construction Engineering segment, the company manufactures, designs, and installs specialized civil infrastructure and geotechnical materials, including permanent and removable ground anchors; anti-buoyancy anchoring systems; PAP retaining wall systems; tie cables; rockfall protection netting and landslide barrier fences; structural stay cables for bridges; caisson hooks; NEO blocks; and SA-NET slope stabilization systems. The company serves secondary battery manufacturers, cathode material producers, civil engineering contractors, and government infrastructure development projects across South Korea and international markets. In recent corporate developments, the company executed a major strategic shift from its legacy civil engineering focus—formerly operating as Korease Corporation—to the secondary battery materials sector, formally rebranding as Hydro Lithium Inc. following its acquisition by Lithium Plus. Hydro Lithium commercialized its primary 3,600-metric-ton annual capacity lithium chemical plant in Geumsan-gun and initiated construction on a large-scale manufacturing facility in the Saemangeum National Industrial Complex in Gunsan, designed to scale production to 10,000 metric tons per annum of battery-grade lithium chemicals with long-term expansion plans of up to 50,000 metric tons. Additionally, the company expanded its global resource supply chain through strategic international partnerships, executing a binding definitive agreement with Canada-based Prairie Lithium to secure 100% of Phase 1 lithium offtake while supplying proprietary refining equipment, and entering into a strategic collaboration agreement with Nevada Lithium Resources to implement its proprietary extraction technologies at the Bonnie Claire project in the United States.