ChangXin Memory Technologies ordered equipment engineers out of its research facility in Hefei this June, marking a visible crack in China's semiconductor supply chain just as the company prepares for a transformative moment: its Shanghai stock market debut on Monday following an $8.6 billion initial public offering.
The confrontation between CXMT and equipment vendor SiCarrier illustrates something larger—and more troubling for U.S. policymakers. Chinese memory chip makers have seized unprecedented leverage in global markets, and they're using it in ways that reveal both the opportunities and risks of concentrated supply power in critical technologies.
CXMT and its rival Yangtze Memory Technologies, known together as China's "twin stars" of memory, have transformed themselves from also-rans into gatekeepers of chips essential to artificial intelligence, smartphones, and data centers worldwide. CXMT has become the world's fourth-largest memory manufacturer. In just six months, the company erased a decade of losses, booking $7.5 billion in revenue in the first quarter alone—a 719% increase from a year earlier.
The New Pricing Power
That dominance is translating into market control that reverses decades of assumptions about Chinese chip makers. They're no longer the cheap alternative. In recent weeks, CXMT charged more per unit than Samsung's roughly $1,240 price for comparable 64-gigabyte DDR5 server memory modules, according to people familiar with the pricing. Chinese electronics and tech firms have complained to the Ministry of Industry and Information Technology about price increases by both CXMT and YMTC, blaming the hikes for delaying product launches.
The government responded in April by saying it would crack down on memory-chip hoarding aimed at driving up prices. But the underlying dynamic hasn't changed: demand for AI chips has created scarcity, and scarcity has given Chinese suppliers the ability to pick their customers and set their terms.
CXMT signed a five-year agreement with ByteDance, TikTok's Chinese owner, worth more than $7 billion. The company also reached an agreement with Tencent in June worth over $3 billion. These aren't commodity deals—they're strategic alliances that lock in supply for China's tech giants while locking out competitors.
The U.S. Response Divides
Washington is watching with alarm and uncertainty. The Pentagon has designated both CXMT and YMTC as Chinese military companies, citing what it says is their role in aiding China's military-civil fusion strategy—a charge the companies deny. YMTC has already been on the U.S. Entity List since 2022, restricting its access to American suppliers, software, and tools. Congress is debating further restrictions that would curb both companies' access to chipmaking equipment.
But the Trump administration is divided on how aggressively to act. CXMT was approved by a U.S. interagency committee last year for addition to the trade blacklist, but officials have held off implementing the decision. Apple has argued that it needs Chinese memory and has sought assurances that CXMT won't be placed on the Entity List. Micron, the Chinese firms' main Western competitor, has pushed U.S. lawmakers to enact further restrictions.
The White House and the departments of Commerce, Defense, and State declined to comment on the discussions.
The Technology Gap Remains
Despite their market dominance, CXMT and YMTC face real constraints. Both rely on deep ultraviolet lithography machines from Dutch giant ASML. The Dutch government has faced U.S. pressure to restrict sales of advanced lithography equipment to Chinese companies because of potential military applications and because the machines contain U.S. technology.
China has been barred from obtaining ASML's more-advanced extreme ultraviolet lithography machines since the Dutch government began withholding export licenses in 2019. While CXMT has produced its own high-bandwidth memory—an ultrafast format crucial for AI—it remains two generations, or several years, behind its rivals in that critical segment.
Ray Wang, an analyst at SemiAnalysis, said: "If more restrictions are imposed on lithography equipment, that would be the biggest challenge for Chinese memory makers. China remains quite behind in that part of the equipment supply chain compared to other tool segments."
YMTC is more insulated from such restrictions. Since its 2022 addition to the U.S. Entity List, it has replaced around half of its equipment with domestic machinery and developed new techniques to stack memory layers using less-advanced tools.
Strategic Infrastructure
Both companies are backed by the Big Fund, a Chinese state-backed semiconductor investment vehicle, and have received support from local and provincial governments. Chinese officials view them as strategic infrastructure central to Beijing's drive for technological self-reliance, according to corporate filings and policy documents.
Chinese authorities have asked CXMT and YMTC to prioritize supply to domestic firms. The chipmakers plan to expand manufacturing capacity significantly—CXMT is building two new plants in Shanghai and Hefei and is in talks with local authorities elsewhere about a third. Those projects would more than double production capacity to more than 600,000 wafers per month. If the expansion proceeds as planned, CXMT's capacity would overtake Micron by 2030.
YMTC entered the South Korean market in June, launching its consumer memory storage brand and exploiting a gap left by Samsung, SK Hynix, and Micron, which have shifted away from that segment to focus on more-advanced chips.
Why This Matters:
The rise of Chinese memory chip makers presents a fundamental challenge to how democracies manage critical technology supply chains. When essential components concentrate in the hands of state-backed companies answerable to an authoritarian government, it creates leverage that extends far beyond markets into geopolitics and military capability. The U.S. and its allies have built a postwar system on the principle that competitive markets and democratic oversight should govern critical industries. China's approach inverts this: strategic industries are treated as extensions of state power, with supply decisions made for political rather than commercial reasons. The fact that the Trump administration is divided on whether to restrict CXMT, despite Pentagon concerns about military applications, shows how difficult it is for democracies to act decisively when powerful companies like Apple depend on these suppliers. Meanwhile, Chinese tech firms are locked into long-term supply agreements that guarantee their access while competitors face uncertainty. This asymmetry—where state-backed companies can plan decades ahead while democracies debate quarter to quarter—represents a structural disadvantage that goes to the heart of how technological power will be distributed in the coming decades.