Verified Nov 2026
Metal Fabrication
·
Bay City, Michigan
·
Since 1983
SK siltron css is a U.S. subsidiary of SK Group, headquartered in Bay City, Michigan, and founded in 1983. It employs roughly 100 to 200 people and has an estimated revenue band of $50 to $100 million. The company manufactures silicon carbide wafers and substrates for power semiconductors, serving the automotive, electric-vehicle, electronics, renewable-energy, and industrial equipment sectors. Its Michigan operation has been reported as set to close, with the subsidiary being wound down in 2026.
SK siltron css at a glance
Revenue
$50-100M
Est. band
Employees
100-200
Founded
1983
Headquarters
Bay City, Michigan
Certifications
IATF 16949 · ISO 14001 · ISO 45001 · ISO 9001
Import activity
38
Industries
Automotive
Electric Vehicles
Electronics
Plumbing & Hardware
Renewable Energy
Industrial Equipment
Sourcing and import activity
From US customs bill-of-lading records
US sea imports
38
Named foreign suppliers
12
Top origins
Japan · South Korea · Taiwan · Germany
Shared foreign counterparties do not establish that these companies buy from SK siltron css.
What this tells a buyer
Recent reports from mlive.com and The Elec describe the company's plan to close its Michigan plant and liquidate the US silicon carbide wafer subsidiary during 2026.
The company holds IATF 16949, ISO 9001, ISO 14001, and ISO 45001 certifications and lists semiconductor and electronics products.
The company is a subsidiary of SK Group and is not publicly traded, and the record reports no named customers.
Source: US customs bill-of-lading records and public filings · Last verified Nov 05, 2026
STABILITY SIGNALS
Established & active
43 years in operation (founded 1983).
Holds IATF 16949, ISO 14001, ISO 45001, ISO 9001 certification(s) per public sources.
Overview
SK siltron css is a U.S. subsidiary of SK Group, headquartered in Bay City, Michigan, and founded in 1983. It employs roughly 100 to 200 people and has an estimated revenue band of $50 to $100 million. The company manufactures silicon carbide wafers and substrates for power semiconductors, serving the automotive, electric-vehicle, electronics, renewable-energy, and industrial equipment sectors. Its Michigan operation has been reported as set to close, with the subsidiary being wound down in 2026.
At a glance
Attribute | Detail |
|---|---|
Founded | 1983 |
Headquarters | Bay City, Michigan |
Employees | 100-200 |
Revenue | $50-100M (estimated) |
Primary capability | Metal Fabrication |
Certifications | IATF 16949 · ISO 14001 · ISO 45001 · ISO 9001 |
What SK siltron css makes
The company holds IATF 16949, ISO 9001, ISO 14001, and ISO 45001 certifications and lists semiconductor and electronics products.
Products and capabilities described on the company's own site include Semiconductor, Electronics (source: sksiltroncss.com).
Certifications
SK siltron css is associated with the following certifications in public sources. Confirm the certified scope for the specific plant producing your part:
IATF 16949 — sksiltroncss.com
ISO 14001 — sksiltroncss.com
ISO 45001 — sksiltroncss.com
ISO 9001 — sksiltroncss.com
Trade and customs footprint
Recent reports from mlive.com and The Elec describe the company's plan to close its Michigan plant and liquidate the US silicon carbide wafer subsidiary during 2026. US customs bill-of-lading records list 38 inbound shipments across 12 foreign suppliers, with top origins including Japan · South Korea · Taiwan · Germany.
Latest developments
2026-09-23 — SK실트론CSS 美 미시간 공장 청산 막바지…130명 고용 종료 (theguru.co.kr)
2026-07-19 — SK Siltron to Liquidate US SiC Wafer Subsidiary This Year < Supply Chain < 기사본문 - The Elec Inc. (thelec.net)
2026-07-16 — SK Siltron to close Michigan plant, wind down subsidiary - mlive.com (mlive.com)
2026-07-16 — SK Siltron to close Bay County operations | Business | abc12.com (abc12.com)
2025-11-24 — SK Siltron to consolidate local production amid market slowdown (ourmidland.com)
2025-11-24 — [단독]SK실트론, 美 웨이퍼공장 2곳 통폐합한다 | 더트래커 (thetracker.co.kr)
Facilities
SK siltron css is headquartered in Bay City, Michigan. Public sources also reference these locations:
Bay City, Michigan — sk.com
Company details
The company is a subsidiary of SK Group and is not publicly traded, and the record reports no named customers. SK siltron css was founded in 1983, has an estimated 100-200 employees, and is headquartered in Bay City, Michigan. On the LightSource stability read it is rated "Established & active": 43 years in operation (founded 1983). Holds IATF 16949, ISO 14001, ISO 45001, ISO 9001 certification(s) per public sources.
Frequently asked questions
What does SK siltron css make?
SK siltron css is a U.S. subsidiary of SK Group, headquartered in Bay City, Michigan, and founded in 1983. It employs roughly 100 to 200 people and has an estimated revenue band of $50 to $100 million. The company manufactures silicon carbide wafers and substrates for power semiconductors, serving the automotive, electric-vehicle, electronics, renewable-energy, and industrial equipment sectors. Its Michigan operation has been reported as set to close, with the subsidiary being wound down in 2026.
Where is SK siltron css headquartered?
SK siltron css is headquartered in Bay City, Michigan (1311 Straits Drive, Bay City, Michigan, 48706).
When was SK siltron css founded?
SK siltron css was founded in 1983.
How big is SK siltron css?
SK siltron css has an estimated 100-200 employees, with revenue in the $50-100M range (estimated).
What certifications does SK siltron css hold?
SK siltron css lists IATF 16949 · ISO 14001 · ISO 45001 · ISO 9001 on its website. Confirm the certified scope for the specific plant producing your part.
Does SK siltron css import from overseas suppliers?
US customs bill-of-lading records show 38 inbound shipments for SK siltron css, with top origins including Japan · South Korea · Taiwan · Germany.
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Last verified Nov 2026. Is this your company? Request a correction.
Location & contact
Phone
+1 989-625-1161
Certification
IATF 16949 · ISO 14001 · ISO 45001 · ISO 9001
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