How many suppliers does United Microelectronics (UMC) have?

wafergraph tracks 24 key suppliers for United Microelectronics (UMC), across 8 countries.

Which of United Microelectronics (UMC)'s suppliers are single-source risks?

ASML, Lam Research, Applied Materials, KLA and Linde hold monopoly or leader positions in their segments, which makes them the hardest suppliers for United Microelectronics (UMC) to replace.

What is United Microelectronics (UMC)'s supply-chain criticality score?

United Microelectronics (UMC) scores 69/100 on wafergraph's chokepoint criticality index, with 241 tracked companies downstream.

United Microelectronics (UMC) supply chain risk

As of 2026-09-05, United Microelectronics (UMC) depends on 24 tracked suppliers headquartered in 8 countries (7 of them in Japan). 16 of those suppliers hold a monopoly or leader position in their own segment, led by ASML, Lam Research and Applied Materials. United Microelectronics (UMC) itself carries a supply-chain criticality score of 69/100, with 241 tracked companies downstream of it.

Data as of 2026-09-05 · suppliers are the curated key_supplier edges in the wafergraph dataset (researched or segment-inferred — see /methodology) · criticality is the graph-derived chokepoint score, 0–100

Dominant and single-source suppliers

ASML — monopoly in Lithography, Netherlands criticality 100/100
Lam Research — leader in Etch, United States criticality 83/100
Applied Materials — leader in Deposition, United States criticality 83/100
KLA — leader in Metrology & Inspection, United States criticality 83/100
Linde — leader in Specialty Gases, United Kingdom criticality 83/100
Tokyo Electron — leader in Deposition, Japan criticality 83/100
Air Liquide — leader in Specialty Gases, France criticality 83/100
Shin-Etsu Chemical — leader in Silicon Wafers, Japan criticality 83/100
ASM International — leader in Deposition, Netherlands criticality 83/100
SCREEN Holdings — leader in Cleaning, Japan criticality 83/100
Ningbo Jiangfeng Electronic Material (Konfoong) — leader in Sputtering Targets, China criticality 83/100
Tokyo Ohka Kogyo — leader in Photoresists & Chemicals, Japan criticality 83/100
Soitec — leader in Substrates, France criticality 84/100
Adeia Inc. — leader in Semiconductor IP Licensing, United States criticality 83/100
Photronics — leader in Photomasks & Mask Blanks, United States criticality 83/100
JSR — leader in Photoresists & Chemicals, Japan criticality 83/100

A monopoly or leader supplier is the hardest to replace. These are the edges to watch first.

Suppliers by country

Japan — 7 suppliers (29%)
United States — 6 suppliers (25%)
Taiwan — 4 suppliers (17%)
Netherlands — 2 suppliers (8%)
France — 2 suppliers (8%)
United Kingdom — 1 supplier (4%)
China — 1 supplier (4%)
Germany — 1 supplier (4%)

All 24 tracked suppliers

Supplier	Segment	Position	Country	Criticality
ASML	Lithography	monopoly	Netherlands	100/100
Lam Research	Etch	leader	United States	83/100
Applied Materials	Deposition	leader	United States	83/100
KLA	Metrology & Inspection	leader	United States	83/100
Linde	Specialty Gases	leader	United Kingdom	83/100
Tokyo Electron	Deposition	leader	Japan	83/100
Air Liquide	Specialty Gases	leader	France	83/100
Shin-Etsu Chemical	Silicon Wafers	leader	Japan	83/100
ASM International	Deposition	leader	Netherlands	83/100
SCREEN Holdings	Cleaning	leader	Japan	83/100
Ningbo Jiangfeng Electronic Material (Konfoong)	Sputtering Targets	leader	China	83/100
Tokyo Ohka Kogyo	Photoresists & Chemicals	leader	Japan	83/100
Soitec	Substrates	leader	France	84/100
Adeia Inc.	Semiconductor IP Licensing	leader	United States	83/100
Photronics	Photomasks & Mask Blanks	leader	United States	83/100
JSR	Photoresists & Chemicals	leader	Japan	83/100
Air Products	Specialty Gases	major	United States	69/100
MPI Corporation	Probe Cards	major	Taiwan	69/100
GlobalWafers	Silicon Wafers	major	Taiwan	70/100
SUMCO	Silicon Wafers	major	Japan	69/100
Siltronic	Silicon Wafers	major	Germany	69/100
Canon	Lithography	challenger	Japan	58/100
Wafer Works	Silicon Wafers	niche	Taiwan	52/100
Solar Applied Materials	Sputtering Targets	niche	Taiwan	51/100

Downstream exposure

Criticality score: 69/100
Companies downstream of United Microelectronics (UMC): 241
Tracked market cap downstream (priced companies only): $34.96T across 155 priced companies

Cite as: wafergraph, “United Microelectronics (UMC) supply chain risk — 24 suppliers, single-source exposure & criticality”, https://wafergraph.com/supply-chain-risk/umc (data as of 2026-09-05).

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