Tokyo Seimitsu (Accretech) → ASE Technology
As of 2026-09-05, Tokyo Seimitsu (Accretech) is a tracked supplier of ASE Technology. Tokyo Seimitsu (Accretech) is a major in Equipment (Back End) (headquartered in Japan); ASE Technology is a leader in OSAT (headquartered in Taiwan). Tokyo Seimitsu (Accretech) has 9 tracked customers; ASE Technology has 20 tracked suppliers.
Data as of 2026-09-05 · relationship type: tracked supplier → customer · both names resolve in companies.json · no dollar amount is shown unless it already sits on a company record, and none is invented here
Why this edge matters
Tokyo Seimitsu (Accretech) (major in Equipment (Back End)) is a tracked supplier of ASE Technology (leader in OSAT). Wafer dicing, grinding, and metrology equipment maker. World's largest OSAT, includes SPIL; key advanced packaging partner. The edge is one of 20 tracked suppliers of ASE Technology and one of 9 tracked customers of Tokyo Seimitsu (Accretech).
Source: derived from both company records and the counted edges.
The two companies
Tokyo Seimitsu (Accretech) (supplier)
Wafer dicing, grinding, and metrology equipment maker.
ASE Technology (customer)
World's largest OSAT, includes SPIL; key advanced packaging partner.
Other tracked suppliers of ASE Technology
Other tracked customers of Tokyo Seimitsu (Accretech)
Cite as: wafergraph, “Tokyo Seimitsu (Accretech) → ASE Technology — supplier relationship in the semiconductor supply chain”, https://wafergraph.com/relationship/tokyo_seimitsu/ase/ (data as of 2026-09-05).
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