To develop an indigenous, cost-effective, and scalable process for purifying critical metals like In, Ga, and Sb to semiconductor-grade purity 99.99999 + (7N+), meeting the stringent requirements of the electronics and strategic defence sectors. Ultra-high purity metals are essential raw materials for semiconductors, optoelectronics, solar cells, and compound semiconductor devices. India presently depends heavily on imports for 6N–7N+ grade metals, which poses a strategic risk. Developing indigenous purification capabilities for these critical materials is vital for self-reliance in the electronics supply chain.