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San-ei Kagaku Co., Ltd.

Kita-ku, Tokyo, Japan Unknown · unverified Japanese, English Founded 1959 Official site

Specialty chemical maker of permanent via-plugging inks used on MPU package substrates and HDI boards so plated-over vias can be rebuilt as a flat surface.

AI-assisted directory profile. Export readiness, certifications, technical claims and partnership preferences are unverified unless individually supported and reviewed. Listing does not establish supplier endorsement or willingness to enter an NDA. Confirm with the original sources and supplier before procurement or citation.

Core capabilities

  • Permanent hole-plugging inks for PTH and laser BVH
  • Undercoat inks for printed wiring boards
  • One-component thermoset fill with stated high-Tg / low-CTE grades

Related capability assets

Source & provenance

Translation review status: unreviewed. Publication does not establish technical verification or supplier endorsement.

Record updated: .

  • 永久穴詰めインク|電子材料部門

    https://www.san-eikagaku.com/electron/product/permanent_hole_plugging_ink.html

    Primary-source candidate; evidence review: pending.

    Source accessed / recorded (collector timestamp): .

    Source publication date: Not recorded.

  • 会社概要|山栄化学株式会社

    https://www.san-eikagaku.com/company/about/

    Primary-source candidate; evidence review: pending.

    Source accessed / recorded (collector timestamp): .

    Source publication date: Not recorded.

  • ISO|会社情報

    https://www.san-eikagaku.com/company/iso/

    Supporting / discovery source; evidence review: pending.

    Source accessed / recorded (collector timestamp): .

    Source publication date: Not recorded.

Collector timestamps record when a source was stored, not an independent verification date. Source links provide context; they do not validate every specification, readiness label, certification, or proposed partnership route.