[GM United Posco Iron subsidiary invests more than $1 billion to expand North American Electric vehicle Battery supply chain] General Motors and South Korean steel giant Posco's battery material production subsidiary POSCO Future M announced that it will invest more than $1 billion to expand their joint venture plant, Ultium CAM, to increase its cathodic active material (CAM) production capacity in North America. At the same time, integrate the production of cathode material precursor (PCAM).