Tieron / Targeting
Annual report 2026-06-24
Companies › Japanese listed company

NIHON SEIKO CO.,LTD.

日本精鉱株式会社Tokyo Stock Exchange 5729, Nonferrous Metals. Supply-chain directory entry built from public EDINET filings, including relationships the company disclosed in its own annual securities report.

COMPANY NAME (JP)
日本精鉱株式会社
TICKER
TSE 5729
EDINET CODE
E00026
CORPORATE NUMBER
2011101016386
INDUSTRY
Nonferrous Metals (非鉄金属)
HEAD OFFICE
新宿区下宮比町3-2
DISCLOSED FOOTPRINT
2 sites · 2 subsidiaries

Disclosed major customers

Counterparties NIHON SEIKO CO.,LTD. named in its own annual securities report. A company named here has NIHON SEIKO CO.,LTD. in its supply base.

双日株式会社11.9% of revenue
双日株式会社--4,850,41311.9%
Annual securities report (有価証券報告書), filed 2026-06-24 — EDINET S100YIW1
The filing addresses human rights.

Sector risk context: supply-chain risk for Mining & Metals (smelting/refining) in Japan.

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Sources: EDINET code list (Financial Services Agency) and the company’s own annual securities report (有価証券報告書) retrieved via EDINET. Disclosed relationships are quoted from the filing and carry its EDINET accession number; extraction is automated and conservative — anything the filing does not state is left out. Tieron does not certify, audit or endorse the company, and this page contains no Tieron risk assessment. Report an issue with this page — corrections referencing the accession number shown above are fastest to verify.