Manufacturing of test equipment for testing electrical

Census designationManufacturing of test equipment for testing electrical, radio, and communication circuits, and motors (excluding portable instrument transformers)

Facility	City	State	Employees	Status
GIGreenteg INC	Fort Lee	NJ	—	● ACTIVE
Group Four Transducers INC	East Longmeadow	MA	—	● ACTIVE
Gs Optics LLC	Rochester	NY	—	● ACTIVE
GLGtaa LLC	Bridgeton	MO	—	● ACTIVE
GRGuardian Rf Corporation	Temple Hills	MD	—	● ACTIVE
Guinn Partners, LLC	Austin	TX	—	● ACTIVE
Gyrosync CORP	Briarcliff Manor	NY	—	● ACTIVE
Hanel Storage Systems	Warrendale	PA	—	● ACTIVE
HIHanna Instruments, INC.	Woonsocket	RI	100–499	● ACTIVE
Hares INC	Cross Plains	WI	—	● ACTIVE
HSHarmonix Systems INC.	San Marcos	CA	—	● ACTIVE
Harold G. Schaevitz Industries, L.l.c.	Bloomfield Hills	MI	—	● ACTIVE
Hastest Solutions, INC	San Jose	CA	—	● ACTIVE
Hatfield and Company, INC.	Rockwall	TX	—	● ACTIVE
Hawkin Dynamics INC.	Westbrook	ME	—	● ACTIVE
Hayes Automation, INC.	Hermosa Beach	CA	—	● ACTIVE
Haynes Equipment Company, INC.	Olathe	KS	—	● ACTIVE
Hcss LLC	York	SC	—	● ACTIVE
Heatcon Composite Systems, INC.	Tukwila	WA	—	● ACTIVE
Hel INC	Princeton	NJ	—	● ACTIVE
Hengst Filtration Usa, LLC	Lincolnton	NC	—	● ACTIVE
Hero Tactical LLC	Chino	CA	—	● ACTIVE
Herrick Technology Laboratories INC	Manchester	NH	—	● ACTIVE
Herrick Technology Laboratories INC.	Germantown	MD	—	● ACTIVE
Herzan, LLC	Irvine	CA	—	● ACTIVE

FactoryRegistry lists 3,791 facilities whose primary industry classification is one of the 4 industries above. This is a list by industry, not a list of makers: Census reports that establishments in these industries produced test equipment for testing electrical, radio, and communication circuits, and motors (excluding portable instrument transformers), 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.