三元 ('three-element') refers to the cathode mix of nickel, cobalt, and manganese (NCM) or nickel-cobalt-aluminum (NCA). The main alternative in Chinese EV marketing is
磷酸铁锂 (línsuān tiělǐ, LFP), known for safety and longevity. Choosing between them is a common consumer-facing comparison in Chinese EV buying decisions.