DEEP RESEARCH · CMXT
CMTX: TSMC 2nm Supply-Chain Entry and the Other Side of the Lam Research Lawsuit
Due diligence on semiconductor etch Si parts, aftermarket disruption, recycling technology, and 2025 IPO valuation
0. Bottom line first
CMTX has a powerful growth story: entry into TSMC’s 2nm/3nm advanced-node supply chain, Si parts recycling, and expansion of the aftermarket. Three equally large risks stand beside it: Lam Research patent litigation, tight working capital, and a roughly KRW 560B IPO valuation that prices in future TSMC revenue from 2026.
1. Scope: removing CMTX search confusion
Official fact: The source limits the analysis to CMTX Co., Ltd., a semiconductor etch-process parts manufacturer based in Gumi, Gyeongbuk. It excludes Changxin Memory Technologies (CXMT), U.S.-listed Core Molding Technologies, Charcot-Marie-Tooth-related CMTX information, and photomask inspection/overlay metrology materials.
Interpretation: This scoping matters because the search term overlaps with unrelated entities. This report only covers CMTX as an etch-process Si parts manufacturer.
2. IPO and financial performance
Official fact: CMTX filed a securities registration statement for KOSDAQ listing on October 2, 2025. Bookbuilding ended on November 4, 2025, retail subscription was scheduled for November 10~11, and listing was scheduled for November 20. Mirae Asset Securities is the underwriter.
| IPO item | Detail |
|---|---|
| Offering size | 1,000,000 new shares |
| Indicative price | KRW 51,000~60,500 |
| Target valuation | About KRW 560B at the top of the range |
| Use of proceeds | Build Gumi Plant 2 and expand capacity 5x versus 2023 |
| Metric | 2021 | 2023 est. | 2024 est. | 1H25 |
|---|---|---|---|---|
| Revenue | KRW 10.95B | KRW 18.1B | KRW 108.43B | N/A |
| Operating profit | N/A | KRW 3.0B | KRW 16.64B | KRW 26.3B |
| Operating margin | N/A | ~16.6% | ~15.3% | 34.0% |
Official fact: The source cites a 142% revenue CAGR for 2022~2024. Post-money valuation was about KRW 138B in the 2024 Pre-IPO round, while the 2025 IPO target valuation is around KRW 560B, more than a 4x jump in one year.
Interpretation: 1H25 operating profit of KRW 26.3B and a 34% margin are strong, but the source also points to gasping cash flow as inventories and receivables tie up KRW 13.4B. The IPO is growth capital and working-capital survival capital at the same time.
3. Core product: Si parts for etch processes
Official fact: CMTX’s main products are silicon rings and electrodes used inside etch chambers. They are exposed to thousands-degree high-energy plasma and must be replaced every 1~6 months as plasma erosion wears them down.
Official fact: Through subsidiary CELIC, CMTX internally produces single-crystal and polycrystalline silicon ingots at an annual scale of 200 tons. This vertical integration is described as a base for cost competitiveness, quality consistency, and rapid response to customer process needs.
HAR etch
Stacking above 200 and 300 layers increases the severity of deep, narrow hole etching.
Selective SiGe etch
Below 3nm logic requires selective etch in Si/SiGe sandwich structures.
Shorter replacement cycle
Higher plasma energy increases ring and electrode erosion, creating structural consumables demand.
4. Differentiation: infinite Si recycling and aftermarket
Official fact: The source says CMTX commercialized a world-first Si waste-parts recycling technology that collects used Si parts and remanufactures them into parts with quality equivalent to new parts. It says aftermarket supply can be about 30% cheaper and may create more than KRW 130M in annual carbon credits.
Official fact: Micron passed CMTX’s recycling technology through a quality test, while Samsung/SK hynix are described as jointly evaluating the process.
Interpretation: Recycling is not just ESG. It is a Trojan-horse entry strategy: enter with cheap new Si rings and even cheaper recycled Si rings, then expand into higher-value specialty silicon and SiC.
5. Customer portfolio and the 2026 TSMC variable
| Customer | Products | Process | Approval status | 2025 contribution | 2026+ |
|---|---|---|---|---|---|
| TSMC | New Si parts | 2nm/3nm logic | Tier-1 vendor registration, supply confirmed | Low, no revenue yet | Highest |
| Micron | New/recycled Si parts | Memory | Recycling Qual approved | Highest | High |
| Samsung | New/recycled Si parts | Memory/logic | Joint evaluation | High | High |
| SK hynix | New Si parts | Memory | Supplying | High | High |
| Kioxia | New Si parts | NAND | Supplying | Medium | Medium |
Official fact: The source says CMTX is Korea’s only company officially registered as a Tier-1 vendor to TSMC, with parts supply confirmed for 3nm and 2nm advanced-node mass-production lines. However, as of the November 3, 2025 report cited in the source, related revenue had not yet occurred and actual revenue was expected from 2026.
Interpretation: The 2025 cash cows are Micron, Samsung Electronics, and SK hynix. The 2026 quantum jump is TSMC. That means valuation relies more on future TSMC revenue than current earnings.
6. Competition and risks: Si versus SiC, and the Lam lawsuit
| Category | SiC rings | CMTX Si parts |
|---|---|---|
| Advantage | 1.5~2x stronger plasma resistance than Si | Cost competitiveness and possible suitability where high-purity Si is preferred |
| Disadvantage | 3~4x more expensive than Si | Cannot replace SiC in every high-performance process |
| Competitors | TCK, BCNC, Hana Materials, Worldex | CMTX, CELIC integration, recycling |
| Strategy | Mainstream high-performance market | Enter price-sensitive processes, then expand into higher-value materials |
Official fact: CMTX is in a patent dispute with Lam Research, a leading etch equipment OEM. The source interprets the case as part of an OEM defense of the high-margin parts market against Korean aftermarket suppliers, not merely a CMTX-specific issue.
Interpretation: In the worst case, injunctions, damages, or royalties could undermine the low-cost aftermarket model. Until an actual ruling or settlement is visible, management’s claim of a favorable litigation phase should be treated as IPO-facing messaging.
7. Conclusion and monitoring indicators
Game changer
TSMC 2nm supply, Si recycling, and 34% operating margin combine into a powerful growth story.
Growth trap
The KRW 560B valuation prices in 2026 revenue and remains vulnerable to litigation and cash-flow shocks.
- Actual ruling or settlement in the Lam Research lawsuit
- Whether TSMC revenue is recognized in 1H26 financial statements
- Gumi Plant 2 schedule and yield during the 5x capacity expansion
- Official approval of Si recycling from Samsung Electronics or SK hynix
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