Not an SEC registrant

Birwelco USA Inc

Customers

None disclosed

Suppliers

1 disclosed

Top supplier share

66%

of CLIR revenue · FY to 2025-12-31

Top supplier by $

$3.5M

CLIR · FY to 2025-12-31

Latest period

Dec 31, 2025

10-K filed 2026-03-31

Band height is the estimated dollar value: the disclosed share × the discloser's revenue for that period (latest full year where available) or federal dollars obligated. Each side is scaled on its own; dashed outlines are named without a figure. Click a band to open its source.

Suppliers 1

Companies that disclose Birwelco USA Inc as a major customer, as a share of their own revenue. 1 active, 0 lapsed.

Company	% of their revenue	Est. $ from Birwelco USA Inc	Period	Trend	Status	Source
CLIR ClearSign Technologies Corp	66%	$3.5M	FY 2025-12-31	+62.0pp	Active	10-K 2026-03-31
Birwelco USA Inc. (a BIH Group company) accounted for 66% and 4% of our annual revenue for the years ended December 31, 2025 and 2024, respectively. 10-K filed 2026-03-31 Period FY 2025-01-01 to 2025-12-31 (66%), FY 2024-01-01 to 2024-12-31 (4%)Accession 0001104659-26-037699

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