Serien Manufacturing, INC.

What they make

• fabrication
• welding
• machining
• painting
• aerospace
• military
• in-house tool design
• concurrent engineering
• product development
• ISO 9001

NAMED ON THE COMPANY’S OWN WEBSITE, READ JUL 29, 2026

Where it is

Other plants nearby

Facility	City	Industry	Status	Distance
The Arnold Engineering CO	Woodstock	All Other Miscellaneous Fabricated Metal Product Manufacturing 332999	● ACTIVE	1.2 KM
Guardian Electric Manufacturing CO	Woodstock	All Other Plastics Product Manufacturing 326199	● ACTIVE	1.7 KM
FMFlex-Weld Manufacturing	Woodstock	All Other Miscellaneous Fabricated Metal Product Manufacturing 332999	◐ LIKELY ACTIVE	1.7 KM
BCBestmetal Corporation	Woodstock	All Other Miscellaneous Fabricated Metal Product Manufacturing 332999	◇ UNVERIFIED	2.2 KM
Jb Plumbing, LLC	Woodstock	Plastics Plumbing Fixture Manufacturing 326191	● ACTIVE	2.3 KM

Every listed plant in McHenry County

Also at this address

No other federal record shares this street address.

Where this record comes from

3 sources hold this plant, and 11 fields on this page come from them. Each line is one agency’s own record of it: the identifier it is filed under, whether that record shows the plant operating or only that it exists, and when the register first and last saw it there.

• The company’s own websiteOPERATING
  first seen JUL 2026 · last seen OCT 2026
• SAM.gov entity registrationOPERATING
  Record G4NUGWNZ3QV7 · first seen JUL 2026 · last seen JUL 2026
• SBA Paycheck Protection Program loan recordsEXISTENCE
  Record IL|woodstock|900 s eastwood dr · first seen APR 2020 · last seen APR 2020

IN MCHENRY COUNTY18 other plants share this one’s industry (Other Fabricated Metal Product Manufacturing, NAICS 3329); 7 of them have a size band on record.

What each source says

Every field below, as each source filed it. The value this page shows is marked; where the sources disagree, the field says so. Status is computed from independent sources; nothing here is self-reported unless marked Claimed.

Name

SAM.gov: SERIEN MANUFACTURING, INC. · JUL 2026

Street address

SAM.gov: 900 S EASTWOOD DR · JUL 2026

City

SAM.gov: WOODSTOCK · JUL 2026

State

SAM.gov: IL · JUL 2026

Coordinates

Census geocoder: 42.308780438264,-88.431851012515 · JUL 2026

Employees (band)

SBA PPP: 1-19 · APR 2020

Website

SAM.gov: www.serienmfg.com · JUL 2026

Year established

Company website: 1984 · AUG 2026

CAGE code

SAM.gov: 5HN27 · JUL 2026

PPP loan

SBA PPP: PPP loan x1, approved 2020-04-15, 5 jobs reported · APR 2020

SAM registration expires

SAM.gov: 2027-07-01 · JUL 2026