# CMTX Co.

Startup profile on Capital Atlas: https://capitalatlas.ai/startups/cmtx-co

- Industry: Semiconductors
- Headquarters: Gumi, South Korea
- Website: www.cmtx.co.kr/
- Total disclosed funding: $8.4M
- Latest round: Series A (Jun 19, 2021)
- Investors on record: 2

## About

Based in Seoul, South Korea, and founded in 2013, CMTX Co., Ltd. (formerly COMA Technology Co., Ltd.) is a material parts company specializing in manufacturing silicon parts for etching process equipment, sapphire parts for deposition process equipment, and ceramic parts during the semiconductor pre-process. In 2015, The company developed a Sapphire plasma injector tube for HDP-CVD equipment and a double bonding nozzle for the etching process used for sapphire semiconductors. CMTX Co., Ltd. joined SEMICON JAPAN in 2016 held in 2016. In 2017, The company registered its patent for the Sapphire edge ring manufacturing method and made an expansion and relocation of a new office building in Gumi-si, South Korea. The company has been selected as a start-up leap forward package operator by the Ministry of SMEs and Startups in 2019. In November 2025, CMTX Co., Ltd. raised KRW 60.5 billion in an IPO, selling 1 million shares at KRW 60,500 apiece, within the KRW 51,000-60,500 per share range on the KOSDAQ.

The company manufactures a line of semiconductors made from silicon, sapphire, and porous ceramic.

## Funding rounds

- Series A, Jun 19, 2021, $8.4M — K2 Investment Partners, Must Ventures

## Investors

- K2 Investment Partners (https://capitalatlas.ai/funds/k2-investment-partners) — Series A
- Must Ventures (https://capitalatlas.ai/funds/must-ventures) — Series A