Verified Nov 2026
Lighting
·
Findlay, Ohio
·
Since 1989
GSW Manufacturing, Inc. is a wiring harness manufacturer headquartered in Findlay, Ohio, founded in 1989. It is a wholly owned subsidiary of GS-ELECTECH of Japan and falls in the 200-500 employee band, with an estimated $100-250M revenue band. The company designs, engineers, and produces wire harnesses, with a primary focus on the automotive sector, and also serves electric vehicles, electronics, renewable energy, and industrial equipment. In 2026 it was named a Toyota Material Handling North America Preferred Supplier.
GSW Manufacturing at a glance
Revenue
$100-250M
Est. band
Employees
200-500
Founded
1989
Headquarters
Findlay, Ohio
Certifications
IATF 16949 · ISO 14001 · ISO 9001
Import activity
500
Industries
Automotive
Electric Vehicles
Electronics
Renewable Energy
Industrial Equipment
Sourcing and import activity
From US customs bill-of-lading records
US sea imports
500
Named foreign suppliers
4
Top origins
Vietnam · Japan · Taiwan · South Korea
Shared foreign counterparties do not establish that these companies buy from GSW Manufacturing.
What this tells a buyer
No customs data is available, but GSW Manufacturing was reported on LinkedIn in June 2026 as the first Japan-owned company to locate in Findlay, in 1989.
The company holds IATF 16949, ISO 9001, and ISO 14001 certifications and produces wire harnesses along with components including sensors and assemblies.
The company has a second location in Reynosa, Tamaulipas, Mexico, in addition to its Findlay headquarters.
Source: US customs bill-of-lading records and public filings · Last verified Nov 05, 2026
STABILITY SIGNALS
Established & active
37 years in operation (founded 1989).
Holds IATF 16949, ISO 14001, ISO 9001 certification(s) per public sources.
Overview
GSW Manufacturing, Inc. is a wiring harness manufacturer headquartered in Findlay, Ohio, founded in 1989. It is a wholly owned subsidiary of GS-ELECTECH of Japan and falls in the 200-500 employee band, with an estimated $100-250M revenue band. The company designs, engineers, and produces wire harnesses, with a primary focus on the automotive sector, and also serves electric vehicles, electronics, renewable energy, and industrial equipment. In 2026 it was named a Toyota Material Handling North America Preferred Supplier.
At a glance
Attribute | Detail |
|---|---|
Founded | 1989 |
Headquarters | Findlay, Ohio |
Employees | 200-500 |
Revenue | $100-250M (estimated) |
Primary capability | Lighting |
Certifications | IATF 16949 · ISO 14001 · ISO 9001 |
What GSW Manufacturing makes
The company holds IATF 16949, ISO 9001, and ISO 14001 certifications and produces wire harnesses along with components including sensors and assemblies.
Products and capabilities described on the company's own site include Wire Harness, Wiring Harness, LED, Sensor, Assembly, Tooling (source: gswiring.com).
Certifications
GSW Manufacturing is associated with the following certifications in public sources. Confirm the certified scope for the specific plant producing your part:
IATF 16949 — gswiring.com
ISO 14001 — gswiring.com
ISO 9001 — gswiring.com
Trade and customs footprint
No customs data is available, but GSW Manufacturing was reported on LinkedIn in June 2026 as the first Japan-owned company to locate in Findlay, in 1989. US customs bill-of-lading records list 500 inbound shipments across 4 foreign suppliers, with top origins including Vietnam · Japan · Taiwan · South Korea.
Latest developments
2026-09-23 — Honored to be recognized as a Toyota Material Handling North America Preferred Supplier for 2026! 🏆✨ | GSW Manufacturing (linkedin.com)
2026-07-20 — 30+ Years of Proven Partnership! 🤝 | GSW Manufacturing (linkedin.com)
2026-06-25 — We are so glad you're here! GSW Manufacturing, Inc. was the first Japan-owned company to locate in Findlay in 1989. Today, there are eight Japanese companies located in Hancock County. We are … | Findlay Hancock County Economic Development (linkedin.com)
2026-05-27 — On Thursday, May 14, the GSW Team had the honor of attending the "Friends of Findlay" annual meeting right here in Findlay, Ohio. Hosted by President Masaru (Mark) Yamamoto, the event was … | GSW Manufacturing (linkedin.com)
2026-04-02 — Consistency You Can Count On 🛠️🧵 | GSW Manufacturing (linkedin.com)
2025-03-07 — Our Company - (gswiring.com)
Facilities
GSW Manufacturing is headquartered in Findlay, Ohio. Public sources also reference these locations:
Findlay, Ohio — gswiring.com
Company details
The company has a second location in Reynosa, Tamaulipas, Mexico, in addition to its Findlay headquarters. GSW Manufacturing was founded in 1989, has an estimated 200-500 employees, and is headquartered in Findlay, Ohio. On the LightSource stability read it is rated "Established & active": 37 years in operation (founded 1989). Holds IATF 16949, ISO 14001, ISO 9001 certification(s) per public sources.
Frequently asked questions
What does GSW Manufacturing make?
GSW Manufacturing, Inc. is a wiring harness manufacturer headquartered in Findlay, Ohio, founded in 1989. It is a wholly owned subsidiary of GS-ELECTECH of Japan and falls in the 200-500 employee band, with an estimated $100-250M revenue band. The company designs, engineers, and produces wire harnesses, with a primary focus on the automotive sector, and also serves electric vehicles, electronics, renewable energy, and industrial equipment. In 2026 it was named a Toyota Material Handling North America Preferred Supplier.
Where is GSW Manufacturing headquartered?
GSW Manufacturing is headquartered in Findlay, Ohio (1801 Production Dr, Findlay, Ohio, 45840-5446).
When was GSW Manufacturing founded?
GSW Manufacturing was founded in 1989.
How big is GSW Manufacturing?
GSW Manufacturing has an estimated 200-500 employees, with revenue in the $100-250M range (estimated).
What certifications does GSW Manufacturing hold?
GSW Manufacturing lists IATF 16949 · ISO 14001 · ISO 9001 on its website. Confirm the certified scope for the specific plant producing your part.
Does GSW Manufacturing import from overseas suppliers?
US customs bill-of-lading records show 500 inbound shipments for GSW Manufacturing, with top origins including Vietnam · Japan · Taiwan · South Korea.
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Last verified Nov 2026. Is this your company? Request a correction.
Location & contact
Phone
+1 419-423-7111
Certification
IATF 16949 · ISO 14001 · ISO 9001
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