Denka

Exiting cement and transferring the sales business to Taiheiyo Cement (2022)

Key decision·2022· Denka — the full company history →

That there was someone next door to hand it to

At the Omi works, limestone dug from Mount Kurohime was sorted by purity and size, and what would not do for carbide went to cement. By-products of carbide and chloroprene rubber went into the kilns, and even waste from outside the company was turned into fuel and raw material. What the resolution of 25 October 2022 cut was not the product cement but this very mechanism of sorting and reuse. In exchange for giving up 2.9% of consolidated sales, the job of digging the stone passed to Taiheiyo Cement.

Putting the chain outside did not, however, make Omi lighter. Limestone will still be bought from Taiheiyo Cement, and the by-products taken by Myojo Cement. That the counterparty could be narrowed to one company owed much to Myojo having a plant in the same city of Itoigawa and to a relationship already built through joint mine development. Turn that around and, without those conditions, the carbide-centred chain could not have been folded up at all. More than the skill of the withdrawal, what told may have been that there was someone next door to hand it to.

Revenue and net margin, FY2017–FY2026

Revenue in ¥ bn (bars) and net margin in % (line), for the years around the decision. Shaded columns are FY2022 onwards — after it was taken.

Source: securities reports

Read the full dossier in Japanese →

The Japanese edition carries the complete record of this decision — the situation that forced it, the options weighed, what actually followed, and the sources behind every claim.

Other key decisions at Denka


Yen amounts are converted at the average rate of each figure’s own year — not today’s rate; the revenue chart is shown in yen. Exchange rates & sources — the full ¥/US$ table →


Disclaimer

  • This page is provided for general information only and is not investment advice, nor a recommendation to buy or sell any security.
  • Figures are compiled independently and include our own estimates, approximations and machine-processed data; we make no warranty as to their accuracy or completeness.
  • Sources are primarily each company’s securities reports and other public filings, but errors and omissions may remain.
  • Any use of this information is at the reader’s own risk. Past performance does not indicate future results.
  • Company names, logos and other marks belong to their respective owners.

Data API

Denka’s history, financials, executives and shareholders are published as static JSON — no key, plain GET. Full specification →

Method Endpoint Returns
GET /api/companies.json All companies
GET /api/4061/manifest.json Resource index
GET /api/4061/history.json History overview
GET /api/4061/timeline.json Chronology
GET /api/decisions.json All management decisions (index)
GET /api/4061/decisions.json Management decisions (index)
GET /api/4061/decisions/{slug}.json One decision (full dossier)
GET /api/4061/executives.json Executives
GET /api/4061/shareholders.json Major shareholders
GET /api/4061/financials.json Financial statements
GET /api/4061/financials-longterm.json Long-term results
GET /api/4061/segments.json Business segments
GET /api/4061/regions.json Sales by region
GET /api/4061/workforce.json Workforce