China's domestic semiconductor sector is accelerating self-sufficiency, raising supply-chain concerns for South Korea's memory makers (SK Hynix, Micron) and equipment vendors.

China’s rapid ascent in semiconductors is undermining the foundational stability of South Korea’s materials, parts, and equipment (MPE) ecosystem, a shift that extends far beyond the country’s major chipmakers. As Chinese firms leverage their expansive domestic fabrication facilities as testing grounds to rapidly build mass-production track records, analysts warn that the threat to South Korean MPE suppliers has evolved from “we cannot sell to China” to “China no longer needs to buy from us.”

According to industry sources reporting on the 15th, China’s push for MPE self-sufficiency is advancing ahead of schedule, driven by targeted government funding alongside aggressive domestic fab expansion. In 2024, Beijing launched its third national semiconductor investment vehicle, commonly referred to as the “Big Fund,” capitalized at CNY 344 billion (approximately $51.3 billion). While earlier iterations concentrated primarily on manufacturing infrastructure, the third fund has reportedly expanded its mandate to cover manufacturing equipment and other sectors historically reliant on foreign technology.

The upcoming YMTC Wuhan Fab 3, slated to commence operations late this year, exemplifies this trend. As additional fabrication plants come online, domestic etch equipment manufacturers like Advanced Micro-Fabrication Equipment (AMEC) are securing vital opportunities to validate mass-production capabilities. An executive at a South Korean memory semiconductor MPE firm, speaking anonymously, noted: “We are forced to compete against global leaders, yet we operate in a completely different weight class. Now, China is rapidly closing that gap as well.”

Park Jae-gun, a distinguished professor at Hanyang University, argues that China’s MPE advancement stems less from immediate technological superiority than from accelerated validation cycles. “Chinese MPE firms are growing not because their technology is overwhelmingly advanced, but because domestic fabs have provided them with critical validation opportunities,” Park stated. “South Korea must similarly ramp up R&D backing and fast-track testbed development.”

Jeong Hyeong-gon, a senior research fellow at the Korea Institute for International Economic Policy, observed: “China has already attained significant competitiveness in commodity wafers and core semiconductor materials. The nation is restructuring itself into a fully closed-loop ecosystem where everything from MPE to final semiconductor production remains domestically self-sufficient.” A representative from a South Korean equipment manufacturer echoed these concerns: “Previously, our primary risk was being unable to sell into the Chinese market. Moving forward, the real danger is that China will no longer need to purchase Korean goods. In the worst-case scenario, there may be no viable market left for South Korean firms.”

Technology Gap Narrowing by Two Years Annually

China’s rapid progress is further reflected in shifting market dynamics. Data from Counterpoint Research shows that ChangXin Memory Technologies (CXMT)’s global DRAM market share climbed from 4% in the second quarter of last year to 10% in the second quarter of this year. Over the same timeframe, Yangtze Memory Technologies (YMTC) captured a 14% share, effectively matching the position of Japan’s Kioxia.

During a National Assembly panel discussion on the 14th titled “China’s Semiconductor Rise: Is South Korea Prepared?”, Baek Seo-in, a professor at Hanyang University’s Division of Interdisciplinary Studies, warned: “Domestic Chinese experts regard memory chip development as a question of time rather than technical feasibility, unlike bottlenecks in GPUs or extreme ultraviolet (EUV) lithography equipment. By deploying massive capital and labor resources, they are compressing the technological gap by approximately two years for every calendar year that passes.”

Shin Chang-hwan, a professor at Sungkyunkwan University’s School of Electronic and Electrical Engineering, projected an even sooner crossover in production scale. “If South Korean manufacturers pause facility expansion, CXMT and YMTC could match SK Hynix’s production capacity within two to three years,” Shin cautioned. “Should China escalate its volume-driven strategy and trigger a price war in the commodity DRAM segment, the global market structure could face severe disruption starting in the latter half of next year.”

Kwon Seok-jun, a professor at Sungkyunkwan University’s School of Chemical Engineering, highlighted how today’s competitive dynamics diverge sharply from historical precedents. “In previous semiconductor price wars, weaker competitors simply exited the market through bankruptcy,” Kwon explained. “Today, however, Chinese firms backed by sustained government subsidies can endure indefinitely. We have entered a prolonged war of attrition with no clear exit strategy, leaving neither side able to secure a decisive advantage. Instead of competing internally, South Korean firms require a coordinated, state-led framework.”

Growing Calls for a ‘Korean IMEC’

Industry stakeholders are converging on three priority actions: establishing shared research infrastructure, safeguarding and nurturing proprietary technologies, and expanding support for specialized talent. At the center of these demands is a call for the government to spearhead a “Korean IMEC”—an ecosystem model in which rival chipmakers, equipment suppliers, and academic institutions collaborate to co-develop and validate foundational technologies.

Originally founded in 1984 under the auspices of the Belgian government, IMEC operates as an industry-academia-research partnership where corporations, universities, and research institutes jointly validate next-generation manufacturing processes and nanoelectronics. This framework enables direct competitors to maintain independent product strategies while pooling resources to de-risk foundational technology development. Companies that initially hesitated to collaborate ultimately joined forces once the state provided the necessary institutional scaffolding.

Domestically, SK Hynix is constructing the “Trinity Fab” within the Yongin semiconductor cluster, backed by joint funding from central and municipal authorities totaling ₩860 billion (approximately $637.9 million). Designed as a pilot facility, Trinity Fab will allow MPE suppliers to validate the mass-production readiness of their equipment. Scheduled to open in 2027, the roughly 3,300-square-meter site will enable hardware testing, though certain advanced process nodes will remain restricted.

Ahn Ki-hyun, executive director of the Korea Semiconductor Industry Association, stressed the necessity of wafer access: “R&D cannot proceed without physical wafers. The government must subsidize R&D-grade wafers and ensure cost-effective testing for advanced process nodes and packaging technologies.”

Lee Ki-jeong, CEO of Trinity Fab, noted that operational expenses remain a hurdle: “Even with a testbed in place, the costs associated with testing, evaluation, and data analysis place a heavy financial strain on small and medium-sized MPE firms. If the government introduces voucher systems to reduce access fees for demonstration infrastructure and prioritizes firms excluded from prior R&D grants, it would significantly improve utilization rates.” He added, “China’s preference for procuring domestic equipment is steadily eroding South Korean manufacturers’ foothold in the commodity equipment market. To survive, we must broaden demonstration access so companies can achieve breakthrough, super-gap technologies.”

Policy Chain and Ecosystem Protection

Analysts emphasize that government intervention must also target international market penetration. Expanding opportunities for overseas fab validation, streamlining foreign certification processes, and fostering cross-border technical partnerships would help South Korean suppliers diversify their client portfolios. Furthermore, policymakers are urged to measure support success not by the quantity of funded R&D initiatives, but by tangible outcomes such as mass-production deployment and verified export revenue.

Jeong Hyeong-gon reiterated the need for systemic integration: “From core technology R&D and validation to certification, initial procurement, mass production, scaling, and global customer acquisition, every stage must be linked within a unified policy framework. Only then will support measures yield measurable results.”

Professor Park cautioned that a deteriorating MPE ecosystem poses a direct threat to downstream competitiveness. “Should South Korea’s MPE sector weaken, Samsung Electronics and SK Hynix will grow increasingly reliant on foreign suppliers, elevating both supply chain vulnerabilities and procurement expenses,” he warned. “Without an ecosystem capable of generating globally competitive technologies and products, South Korea will inevitably cede ground in the broader race. MPE support must therefore be framed as a strategic imperative to safeguard national semiconductor manufacturing competitiveness, rather than merely a subsidy for individual vendor relationships.”

On the policy front, officials are drafting a comprehensive response strategy. Ahn Hong-sang, director of the semiconductor division at the Ministry of Trade, Industry and Energy, stated: “We are continuously tracking China’s acceleration curve and plan to construct a sustainable economic loop by reinvesting surplus semiconductor tax revenues back into the industry.”

Historically, South Korea’s semiconductor industry overtook Japan to claim the global No. 1 position in the 1980s largely due to the government-backed “4M DRAM National Joint R&D Project,” launched in 1986. Participating comp