Sii INC

3470 Martinsburg Pike, Clear Brook, VA 22624

REPORTED CLOSEDLAST SEEN IN FEDERAL DATA OCT 2026 · 2 SOURCES

A closure has been reported but not corroborated.

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What they make

Plastics Material and Resin Manufacturing325211

Products

Sold by SII INC · 1

Miscellaneous Chemical Specialties

Recorded against the company rather than this address. Federal award and drug records name the company, not the plant, so we cannot say which of its sites makes these.

Where these came from

1 from usaspending_psc · Federal registry

Supplied under federal award N0016724P0251 (2024-09-10), PSC . An award shows what the government bought from this company; it does not establish which of its sites made it.

Where it is

39.25686, -78.09587 · CENSUS TIGER

COUNTY

Frederick County

METRO AREA

Winchester, VA-WV

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STREET VIEW

Open street-level view — AUG 2024

Other plants nearby

Facility	City	Industry	Status	Distance
Atlantic Research Corporation	Kearneysville	Artificial and Synthetic Fibers and Filaments Manufacturing 325222	UNVERIFIED	7.0 KM
Creative Urethanes INC - Winchester	Winchester	Fabric Coating Mills 313320	UNVERIFIED	13.5 KM
TeMa North America LLC	Kearneysville	Plastics Material and Resin Manufacturing 325211	LIKELY ACTIVE	22.4 KM
Axalta Coating Systems USA LLC	Front Royal	Plastics Material and Resin Manufacturing 325211	LIKELY ACTIVE	31.4 KM
Avtex Fibers Superfund Site	Front Royal	Artificial and Synthetic Fibers and Filaments Manufacturing 325220	UNVERIFIED	38.1 KM

Every listed plant in Frederick County

Also at this address

More than one federal record exists for this street address. The primary record for the site is listed first.

Virginia Harbor Services INC

Clear Brook, VA

UNVERIFIED326199

Where this record comes from

2 sources hold this plant, and 8 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.

SAM.gov entity registrationOPERATING
Record MMRKLNN6PLB3 · first seen MAR 2026 · last seen OCT 2026
DEAD SITECLOSURE
first seen AUG 2026 · last seen AUG 2026

IN FREDERICK COUNTY1 other plant shares this one’s industry (Resin, Synthetic Rubber, and Artificial and Synthetic Fibers and Filaments Manufacturing, NAICS 3252); 0 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: SII INC
Street address: SAM.gov: 3470 MARTINSBURG PIKE
City: SAM.gov: CLEAR BROOK
State: SAM.gov: VA
Coordinates: Census geocoder: 39.256864358349,-78.09586702493 · JUL 2026
Website: SAM.gov: NO WEBSITE
CAGE code: SAM.gov: 59990
SAM registration expires: SAM.gov: 2027-03-10

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