Manufacturing of parts and accessories for electricity and…

Facility	City	State	Employees	Status
Hi-q Environmental Products CO INC	San Diego	CA	—	● ACTIVE
Hirox Usa, INC.	Oradell	NJ	—	● ACTIVE
Hi-techniques, INC	Madison	WI	—	● ACTIVE
Hoffman & Company, INC.	Corvallis	OR	—	● ACTIVE
Holzworth Instrumentation INC.	Parsippany	NJ	—	● ACTIVE
Hooks & Associates, INC.	Fort Smith	AR	—	● ACTIVE
Horiba Instruments Incorporated	Ann Arbor	MI	—	● ACTIVE
Hottinger Bruel & Kjaer INC.	Duluth	GA	—	● ACTIVE
Hottinger Bruel & Kjaer INC.	Marlborough	MA	—	● ACTIVE
Htx Technologies LLC	Carrboro	NC	—	● ACTIVE
Hughes CORP	Coral Springs	FL	—	● ACTIVE
Hughes CORP	Strongsville	OH	—	● ACTIVE
Hummingbird Precision Machine CO.	Lacey	WA	—	● ACTIVE
Hyland Optical Technologies CORP.	Scotts Valley	CA	—	● ACTIVE
Hyperion Analytical LLC	Rancho Cucamonga	CA	—	● ACTIVE
HIHyperlabs INC.	Beaverton	OR	—	● ACTIVE
Ibidi USA INC	Fitchburg	WI	—	● ACTIVE
Icon Scientific, INC.	North Potomac	MD	—	● ACTIVE
Iet Labs INC	Roslyn Heights	NY	—	● ACTIVE
Iet Labs INC	West Roxbury	MA	—	● ACTIVE
Ikonix USA LLC	Lake Forest	IL	—	● ACTIVE
Imagine Scientific INC	Norwood	MA	—	● ACTIVE
Imc Dataworks, LLC	Ann Arbor	MI	—	● ACTIVE
ITImgen Technologies Lc	Boyce	VA	—	● ACTIVE
Independent Testing Agency, INC.	Hanover	MD	—	● ACTIVE

FactoryRegistry lists 2,336 facilities whose primary industry classification is one of the 2 industries above. This is a list by industry, not a list of makers: Census reports that establishments in these industries produced parts and accessories for electricity and electrical signal indicating and recording instruments, in the shares shown above, and does not say which establishments. Where a plant’s own website or a federal registry names what that plant makes, it appears on the plant’s own page with the source named.

The U.S. Census Bureau recorded this product line in 2 US manufacturing industries in the 2022 Economic Census, as the most specific line those industries reported. At least 34 establishments reported producing it; the count for 1 of those industries was withheld.

These are counts of establishments by industry: the Economic Census publishes them as industry totals and never as a list of plants.

NAPCS collection code 2045230009. Source for the product line, the establishment counts and the shares: U.S. Census Bureau, 2022 Economic Census (ECNNAPCSIND2022). Federal source data is public domain. Facility records are compiled separately by FactoryRegistry and carry their own sources.