China's CXMT starts small-scale HBM3E production to supply domestic AI chipmakers

CXMT's small-scale HBM3E production marks a significant step for China's domestic chip supply chain, particularly for AI chip developers like Alibaba's T-Head and Cambricon. The ability to produce advanced memory chips, even in limited volumes, addresses a critical bottleneck created by US export restrictions on high-end memory and fabrication tools. This initiative reflects China's strategic response to secure its AI ambitions and reduce reliance on foreign technology. However, the immediate impact on the broader market will be limited. CXMT reportedly faces low manufacturing yields and lags behind leaders like SK hynix and Samsung Electronics by an estimated three to five years. South Korean manufacturers began commercial HBM3E production in 2024 and have already advanced to HBM4. While CXMT's recent 57.9 billion yuan (USD 8.6 billion) funding will support its HBM push, its capability remains unproven at scale, as noted by Counterpoint's Neil Shah.