Naura Claims Breakthrough to Aid CXMT in 3D DRAM Production

China’s semiconductor self-sufficiency ambitions just got a shot of adrenaline. Naura Technology Group, the country’s biggest domestic semiconductor equipment manufacturer, says it has achieved a breakthrough that could meaningfully assist ChangXin Memory Technologies (CXMT) in producing 3D DRAM chips, a category of advanced memory that has so far remained difficult to manufacture without access to Western tools.

CXMT, now the world’s fourth-largest DRAM producer with roughly 7.7% global market share, has been building momentum despite operating under the shadow of US export restrictions that block access to cutting-edge equipment like EUV lithography machines.

Naura has not publicly disclosed granular details about the specific processes, performance benchmarks, or production timelines tied to its announced breakthrough. What is known is that the company’s work is oriented toward enabling 3D DRAM fabrication and supporting high-bandwidth memory (HBM) stacking, both of which are critical for next-generation computing workloads like AI training and inference.

For CXMT, the ability to source that equipment domestically rather than importing it from companies like Applied Materials, Lam Research, or ASML changes the calculus entirely. US sanctions have made it increasingly difficult for Chinese chipmakers to acquire the most advanced foreign tools, creating a bottleneck that has constrained how quickly firms like CXMT can scale.

CXMT operates multiple 12-inch DRAM fabrication facilities with a recent combined capacity of approximately 300,000 wafers per month, and it has plans to double that figure. It has achieved yield rates above 90% on certain DDR5 products, a metric that puts it in competitive territory with established memory giants like Samsung, SK Hynix, and Micron.

CXMT’s DDR5 modules have demonstrated competitive performance on AMD platforms. The company’s 2026 IPO on the Shanghai Stock Exchange raised approximately 57.9 billion yuan, with proceeds earmarked for expanding DRAM wafer production lines and upgrading manufacturing processes.

CXMT is also targeting mass production of HBM3 by late 2026. High-bandwidth memory is the fuel that powers AI accelerators like Nvidia’s H100 and its successors. SK Hynix currently dominates the HBM market.

The US has progressively tightened export controls on semiconductor technology to China since 2022, restricting both finished chips and the equipment used to make them. Chinese firms that might have happily purchased American or Dutch equipment for another decade are now under enormous pressure to develop homegrown solutions. Naura sits at the center of that effort.

The global DRAM market is dominated by three players: Samsung, SK Hynix, and Micron. CXMT’s 7.7% market share already makes it a non-trivial fourth competitor, and any acceleration in its 3D DRAM or HBM capabilities would intensify pricing pressure across the industry.

For Micron, which has its own complicated relationship with the Chinese market after being partially banned from government procurement, the emergence of a stronger domestic competitor is an unwelcome development.

CXMT’s HBM3 target of late 2026 is ambitious but not implausible given its trajectory. Whether Naura’s equipment can deliver the precision required for those advanced processes will be the gating factor.