A South Korean court has ruled that Chinese memory maker CXMT executed a deliberate plan, known internally as "Project Hefei," to steal Samsung's DRAM manufacturing technology and convert it into a 10% share of the global DRAM market.

At the center of the case sits a written roadmap containing a 620-step production recipe for DRAM chips. According to the court, that document functioned as a complete transfer of Samsung's process know-how — the kind of proprietary, accumulated manufacturing knowledge that normally takes decades and billions of dollars to develop.

What did the court actually find?

The court's findings describe corporate conduct rather than the actions of a single rogue engineer. CXMT, formally known as ChangXin Memory Technologies, stands accused of having used a written roadmap to systematically extract Samsung's DRAM technology.

The mechanism was straightforward in its audacity: a documented, step-by-step manufacturing recipe — 620 individual process steps — allegedly moved from Samsung into CXMT's hands. DRAM production at scale depends on precisely this kind of process documentation, where the ordering, parameters and tolerances of hundreds of steps determine yield, cost and product quality.

The codename "Project Hefei" refers to the Chinese city where CXMT operates its fabrication plant. The court connected the project to the alleged technology transfer and to CXMT's subsequent market gains.

Why does the 620-step recipe matter?

DRAM manufacturing is among the most process-intensive disciplines in the semiconductor industry. A finished wafer passes through hundreds of discrete process steps — deposition, etching, lithography, cleaning and metrology among them.

A document that records all 620 steps, in the correct sequence with the correct parameters, is effectively a manufacturing blueprint. Whoever holds it can skip years of iterative yield learning, one of the most expensive and least portable assets in memory production.

That is precisely what the court says Samsung lost. The ruling frames the alleged theft not as an isolated leak but as an organized, documented campaign with a defined commercial objective.

What was the market impact?

The court tied the alleged technology theft directly to CXMT's commercial position: a 10% share of the global DRAM market.

That figure places CXMT among the significant players in a market long dominated by three suppliers — Samsung, SK Hynix and Micron. A 10% share achieved in a comparatively short period is unusual in an industry where process leadership normally decides who can profitably ship product at scale.

For Samsung, the alleged loss cuts on two fronts:

• Technology: the 620-step process recipe represents accumulated manufacturing know-how
• Market position: a new competitor holding 10% of global DRAM demand that Samsung and its peers previously contested among themselves

How does this fit the broader pattern?

The case adds a judicial finding to a dispute that has simmered between Korean and Chinese memory makers for years. Korean prosecutors and courts have previously pursued cases involving the movement of semiconductor process data from Samsung and SK Hynix toward Chinese manufacturers.

What distinguishes this ruling is the specificity of the evidence cited: a named project, a written roadmap, and a quantified process count. Courts rarely describe alleged industrial espionage in such concrete terms.

The ruling also lands at a sensitive moment for the global memory industry:

• Samsung and SK Hynix are investing heavily in HBM and next-generation DRAM for AI systems
• CXMT continues to expand capacity and move up the process-generation ladder
• Governments in the US, Korea, Japan and Europe are tightening controls on semiconductor technology transfer

A documented case of a 620-step recipe crossing from Samsung to a Chinese competitor strengthens the argument of those pushing for stricter export and know-how controls.

What are the consequences?

The court's statement establishes a legal characterization of CXMT's conduct. The commercial consequences for CXMT — sanctions, restrictions on equipment access, or loss of customer trust in markets sensitive to IP provenance — will depend on how regulators and supply-chain partners respond.

For Samsung, the ruling validates its long-standing complaints about technology leakage, but it does not by itself recover either the process knowledge or the market share at issue.

The core fact remains: a court has now put its authority behind the claim that CXMT's rise to 10% of the global DRAM market rests on a stolen, 620-step manufacturing recipe obtained through a project the company itself codenamed Hefei.