What CMTX does

CMTX Co., Ltd. (KOSDAQ: 388210) is a South Korea-based precision machining company that manufactures consumable components and raw materials for the global semiconductor industry. Originally founded in 2013 as COMA Technology and rebranded to CMTX in May 2024, the company operates what it describes as Korea's only fully integrated one-stop production system covering silicon, quartz, sapphire, and ceramic materials from raw ingots through finished parts. CMTX serves leading semiconductor manufacturers including Samsung Electronics, SK Hynix, TSMC, Micron Technology, Kioxia, YMTC, SMIC, CXMT, Infineon, Texas Instruments, GlobalFoundries, and UMC, supplying components used in dry etching, CVD, diffusion, RTP, and wet cleaning chambers across 31+ fabs worldwide.

CMTX's core product portfolio comprises silicon parts (C-Shroud rings, outer rings, electrodes, and curved electrodes for plasma distribution control), quartz parts (rings, windows, and inserts for high-temperature processes), sapphire parts (windows, tubes, and sleeves for plasma and high-voltage environments), ceramic parts (nozzles, SiC wafers, Y2O3 rings from Al2O3, SiC, Y2O3, ZrO2, and AlN materials), and silicon ingots produced internally through subsidiary SELIG. The underlying technology stack includes precision chemical etching with patented vertical pressurized etching devices for micro-hole machining at aspect ratios up to 30:1, Electrical Discharge Machining (EDM), ultra-precision micrometer-level machining, polishing and lapping, and proprietary micro-crack removal processes. SELIG Co., Ltd., wholly owned since 2020 when CMTX acquired OCI Specialty's Cheonan plant, produces both single-crystal and polycrystalline silicon ingots in-house, providing vertical integration that is unique among Korean silicon parts manufacturers.

CMTX generates revenue exclusively through B2B direct sales of hardware components to semiconductor fabs, with no public pricing disclosed and an enterprise tier-1 supplier sales motion. Revenue is driven by consumable replacement cycles within etching and deposition chambers at customer fabs. Operations span South Korea (Gumi M-Campus at 40,000 sqm, Gumi C-Campus, Hwaseong Dongtan office, and Cheonan SELIG materials plant) and Taiwan (CMAT subsidiary established April 2024), serving customers across Korea, Taiwan, Japan, China, Singapore, Malaysia, the United States, and Germany. The company holds ISO 9001, ISO 14001, and ISO 45001 certifications, completed its KOSDAQ listing in November 2025, and is led by co-CEOs Park Sung-hoon (founder) and Park Jong-wha.

Name

CMTX

Legal name

(주)씨엠티엑스 (CMTX Co., Ltd.)

Website

https://cmtx.co.kr

Company type

Private

Founded year

2013

Operating status

Operating

Headcount range

251–500 employees

Short description

CMTX is a South Korean precision machining manufacturer of semiconductor consumable components—silicon, quartz, sapphire, and ceramic parts—plus silicon ingots via subsidiary SELIG. It supplies tier-1 to Samsung, SK Hynix, TSMC, Micron, and 31+ global fabs.

Ownership category

akta.pro rank

Product category

Semiconductor Materials & Components

NAICS

Machine Shops (33271)

SIC

Miscellaneous Fabricated Metal Products (3490)

akta.pro primary industry

EDM & Electrochemical Machining (Wire/Sinker EDM, ECM) (IMAHADAF)

akta.pro secondary industry

Semiconductor Process Chemicals (Wet & Dry) (IMAEAKAA)

Keywords

• Semiconductor materials
• Precision machining
• Silicon parts
• Semiconductor components
• Wafer fabrication supplies

Headquarters

HQ city

Sangdong

HQ country

South Korea

HQ region

Asia

Offices5 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Technology or R&D, Operations, Supply Chain, Infrastructure

Revenue model

1. Semiconductor Materials and Components Sales: CMTX generates revenue through the manufacture and sale of precision semiconductor materials and components including silicon parts (rings, electrodes, curved electrodes), quartz parts (rings, windows, inserts), sapphire parts (windows, tubes, sleeves), and ceramic parts (nozzles, rings, SiC wafers). Revenue is primarily from B2B direct sales to semiconductor fabs.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

CMTX manufactures and supplies precision-machined semiconductor materials and components — including silicon parts (rings, electrodes, curved electrodes), quartz parts (rings, windows, inserts), sapphire parts (windows, tubes, sleeves), and ceramic parts (nozzles, SiC wafers) — used as consumable components inside etching, CVD, diffusion, RTP, and cleaning chambers. The company operates a fully integrated one-stop production system extending from raw silicon ingot production (via subsidiary SELIG) through ultra-precision machining and chemical etching to finished parts.

Product overview

CMTX is a precision machining company offering a comprehensive portfolio of semiconductor materials and components. The company operates a fully integrated one-stop production system covering silicon, quartz, sapphire, and ceramic materials. Key products include Silicon Parts (rings, electrodes), Quartz Parts (rings, windows, inserts), Sapphire Parts (windows, tubes, sleeves), Ceramic Parts (nozzles, rings, SiC wafers), and Silicon Ingot production through subsidiary SELIG. The company positions itself as Korea's only integrated silicon parts producer with complete production from raw materials to finished components.

Differentiator

Problem solved

Functional benefit

Products and services

• Silicon Parts Precision silicon parts for semiconductor etching equipment, including C-Shroud Ring, Silicon Outer Ring, Silicon Electrode, and Silicon Curved Electrode. Used as consumable components inside etching chambers to protect equipment from plasma and chemical reactions while providing wafer-edge protection, gas flow stabilization, and plasma generation/distribution control.
• Quartz Parts High-purity quartz (SiO2) parts including Quartz Ring, Quartz Window, and Quartz Insert/Liner. Used in CVD, diffusion, RTP, and wet cleaning processes for their exceptional heat, corrosion, and chemical resistance.
• Sapphire Parts Single-crystal alumina (Al2O3) parts including Sapphire Window, Sapphire Tube/Rod, and Sapphire Sleeve/Tube/Shaft. Used in etch, CVD, and RTP processes where plasma resistance, high-temperature stability, and high-voltage performance are required.
• Ceramic Parts Ceramic parts including Ceramic Nozzle, Ceramic Ring, SiC Wafer, and Y2O3 Ring. Manufactured from Al2O3, SiC, Y2O3, ZrO2, and AlN materials for use in etch, CVD/ALD, RTP, and implant semiconductor processes.
• Silicon Ingot Production In-house production of single-crystal and polycrystalline silicon ingots via subsidiary SELIG, providing raw-material inputs for CMTX's silicon parts manufacturing and ensuring supply chain stability and quality control.

Quantifiable outcome

• Supplies 31+ semiconductor fabs worldwide
• +2 more outcomes

Named customers12 records

Segments3 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Five partnerships are on record, tiered core and minor.

• SELIG (셀릭)coreStrategic or Co-development Partner · 1 May 2024Subsidiary specializing in silicon ingot production. Established in 2020 to internalize silicon material production, ensuring supply chain stability and quality control for CMTX's silicon parts manufacturing.
• CMAT (Taiwan)minorStrategic or Co-development Partner · 1 January 2024Taiwan subsidiary established in 2024 to expand business presence in Taiwan market.
• Defense Agency for Technology and Quality (국방기술품질원)minorStrategic or Co-development Partner · 1 January 2022Defense Venture Agreement signed for defense industry collaboration.
• OCI SpecialtyminorOthers · 1 January 2020Acquired Cheonan Plant from OCI Specialty in 2020, enabling expansion of materials production capabilities.
• GTAT (USA)minorStrategic or Co-development Partner · 1 January 2019MOU signed with GTAT for entry into the SEMI market (2019).

Scale indicators6 records

Recent moves10 records

Expansion highlights6 records

Direct peers

• CoorsTek: Global manufacturer of technical ceramics and engineered materials used in semiconductor etch and deposition chambers. Overlaps with CMTX's ceramic parts (SiC, Al2O3, Y2O3) for OEM equipment makers.
• Wonik IPS: Korean supplier of quartz and ceramic components for semiconductor etch and deposition equipment. Competes with CMTX on chamber consumables and serves a similar memory/foundry customer base.
• Hana Materials: Korean-listed precision components maker supplying silicon and quartz parts to leading-edge fabs (Samsung, SK Hynix). Closest direct peer to CMTX in the silicon etch consumables space with overlapping customer set and product mix.
• Ferrotec: Japan-headquartered maker of silicon wafers, quartz, and ceramic parts for semiconductor fabs. Comparable to CMTX in its silicon ingot-to-finished-part integration model and global foundry/memory customer footprint.
• MiCo Ceramics: Korean precision ceramics manufacturer producing nozzles, rings, and showerheads used in semiconductor etch and CVD equipment. Direct competitor to CMTX's ceramic parts line for the same OEM/fab buyers.

Broad incumbents

• NGK Insulators: Diversified Japanese ceramics manufacturer with a semiconductor components business serving etch and deposition equipment makers. Comparable in materials technology (ceramic substrates, heater products) but operates across many non-semiconductor end markets.
• Entegris: U.S.-listed broad incumbent supplying specialty materials, fluid handling, and consumables across the semiconductor manufacturing chain. Overlaps with CMTX on chamber consumables but at significantly larger scale and product breadth.

Emerging players

• Tokuyama Corporation: Japanese chemicals/materials producer with semiconductor-grade polycrystalline silicon and high-purity chemicals. Relevant adjacent peer given CMTX's polycrystalline silicon ingot production through SELIG.
• Ultra Clean Holdings: U.S. supplier of subsystems, components, and ultra-high-purity parts cleaning services to WFE OEMs and fabs. Adjacent to CMTX in the chamber consumables ecosystem, particularly in the parts-cleaning and OEM sub-assembly value chain.

Regional players

• SK Enpulse: Korean semiconductor wafer and component manufacturer (formerly SK Siltron CSS). Operates in the same Korean ecosystem as CMTX serving memory and foundry customers, but focuses upstream on silicon wafers rather than chamber consumables.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Subsidiaries2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about CMTX