Eoptolink Technology vs Sumitomo Electric Industries

Both are primarily Photonics & Optics companies. Eoptolink Technology is larger by market cap ($77.3B vs $46.5B). Sumitomo Electric Industries reports higher tracked revenue ($32.4B vs $3.7B).

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Side-by-side

Eoptolink TechnologySumitomo Electric Industries
Market cap$77.3B$46.5B
Revenue$3.7B (FY2025)$32.4B (FY2026)
Primary segmentPhotonics & OpticsPhotonics & Optics
Market positionmajormajor
CountryChinaJapan
Tracked suppliers33
Tracked customers43
Chokepoint / criticality68/10068/100

Market caps/revenue from the wafergraph dataset · data as of 2026-10-09. Criticality is a graph-derived chokepoint score (0–100). Coverage is partial; "Unpriced" means no reliable market cap.

How Eoptolink Technology and Sumitomo Electric Industries compare

  • Size: Eoptolink Technology is the larger company by market cap.
  • Revenue: Sumitomo Electric Industries reports higher tracked revenue.
  • Supply-chain criticality: Both companies have the same chokepoint score (68/100).
  • Footprint: Eoptolink Technology (China) vs Sumitomo Electric Industries (Japan).

Company hubs

Eoptolink Technology · Sumitomo Electric Industries · Distribution & Misc segment

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Cite as: wafergraph, “Eoptolink Technology vs Sumitomo Electric Industries”, https://wafergraph.com/compare/eoptolink-vs-sumitomo_electric (data as of 2026-10-09).

Frequently asked questions3
Is Eoptolink Technology bigger than Sumitomo Electric Industries?
Eoptolink Technology is larger by market cap ($77.3B vs $46.5B).
What's the difference between Eoptolink Technology and Sumitomo Electric Industries?
Eoptolink Technology is a major in Photonics & Optics based in China; Sumitomo Electric Industries is a major in Photonics & Optics based in Japan. Both operate in the Distribution & Misc segment.
Who are Eoptolink Technology's and Sumitomo Electric Industries's suppliers?
wafergraph tracks 3 suppliers for Eoptolink Technology and 3 for Sumitomo Electric Industries.