TOWA → ASE Technology
As of 2026-09-05, TOWA is a tracked supplier of ASE Technology. TOWA is a leader in Equipment (Back End) (headquartered in Japan); ASE Technology is a leader in OSAT (headquartered in Taiwan). TOWA has 13 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
TOWA (leader in Equipment (Back End)) is a tracked supplier of ASE Technology (leader in OSAT). Leader in semiconductor molding/encapsulation equipment. World's largest OSAT, includes SPIL; key advanced packaging partner. The edge is one of 20 tracked suppliers of ASE Technology and one of 13 tracked customers of TOWA.
Source: derived from both company records and the counted edges.
Concentration / risk note
TOWA is positioned as a leader in Equipment (Back End), so this edge is harder to replace than a challenger or niche supplier.
Basis: supplier position. Omitted on edges where the graph does not back a concentration claim.
The two companies
TOWA (supplier)
Leader in semiconductor molding/encapsulation equipment.
ASE Technology (customer)
World's largest OSAT, includes SPIL; key advanced packaging partner.
Other tracked suppliers of ASE Technology
Other tracked customers of TOWA
Cite as: wafergraph, “TOWA → ASE Technology — supplier relationship in the semiconductor supply chain”, https://wafergraph.com/relationship/towa/ase/ (data as of 2026-09-05).
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