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2323 on Taiwan Stock Exchange

CMC Magnetics

Taiwanese optical disc manufacturer

CMC Magnetics Corporation (Chinese: 中環股份有限公司, Central Ring Public Limited Company) is a Taiwanese company that manufactures optical discs. Established in 1978, its factories are located in Taiwan (Memorex, HP, Philips, TDK, Maxell) and Hong Kong (Memorex, Philips). In December 2015, Taiyo Yuden, one of the inventors of the recordable CD and inventor of the original cyanine dye for CD-R, sold its optical disc brand and intellectual property to CMC Magnetics, ending its own production in Japan.2 Its shares trade on Taiwan Stock Exchange under the symbol 2323.1 Wikipedia text CC BY-SA 4.0

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Last updated Oct 21, 2026.

Overview

Dec 2, 1978Founded1

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  • Ticker2323 on Taiwan Stock Exchange1
  • Industrydigital media, optoelectronics1
  • HeadquartersJiying Village1
  • Websitewww.cmcnet.com.tw/en
  • Legal formjoint-stock company1

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CMC Magnetics Corporation (Chinese: 中環股份有限公司, Central Ring Public Limited Company) is a Taiwanese company that manufactures optical discs. Established in 1978, its factories are located in Taiwan (Memorex, HP, Philips, TDK, Maxell) and Hong Kong (Memorex, Philips). In December 2015, Taiyo Yuden, one of the inventors of the recordable CD and inventor of the original cyanine dye for CD-R, sold its optical disc brand and intellectual property to CMC Magnetics, ending its own production in Japan.2

Corporate structure

CMC Magnetics sits at the top of its group. 5 entities, 3 countries on record. Switch between the flow chart and the network, and select any entity to see its details.

  • CMC Magnetics Jiying Village
    • Verbatim Subsidiary · 100% · Wheeling, West Virginia, United States
    • Deltmac Subsidiary · Jiying Village

Built from subsidiaries, stakes and holdings from Wikidata (CC0); major holders from Schedules 13D and 13G. Each entity in the chart links to its source.

What it owns

What CMC Magnetics reports owning in its annual reports to the SEC: buildings, land and equipment, real estate and locations, investments, intangible assets and inventory, at the end of its latest fiscal year and a year before.

Stakes and holdings (Wikidata)

Things Wikidata records the company as owning, with the share when stated.1

Products and brands

CMC produces CD and DVD storage media products, including CD-R, CD-RW, DVD-R/RW, DVD+R/RW, DVD-RAM, and floppy diskettes.

CMC produces the Mr. Data line of optical media, which is or was commonly rebranded and sold by HP, Maxprint, Imation, Memorex, Philips, TDK, BenQ, Verbatim Life Series, Staples, Office Depot, Platinum, Datamax, Optimum, Auchan and other OEM brands.

After Taiyo Yuden sold its optical disc manufacturing business, CMC started the CMC Pro line of optical media, a new line of optical media based on the Taiyo Yuden technology that CMC acquired after Taiyo Yuden left the optical disc market.

From Wikipedia’s article on CMC Magnetics, shared under CC BY-SA 4.0.3

Subsidiaries and ownership

Subsidiaries

From Wikidata.1

Acquisitions

  1. 2020Acquired Verbatim1

Timeline

  1. Feb 17, 1992Went public Listed on Taiwan Stock Exchange1
  2. Dec 2, 1978Founded Founded1

Sources

The numbers on this page point here. Each one links to the record it came from.

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