Manufacturing of process control instruments

Facility	City	State	Employees	Status
PSPrecision Systems INC	Natick	MA	—	● ACTIVE
PSPreiser Scientific INC	Saint Albans	WV	—	● ACTIVE
Presidio Components, INC.	San Diego	CA	—	● ACTIVE
Princeton Research Instruments INC	Princeton	NJ	—	● ACTIVE
PTPronk Technologies INC.	Sun Valley	CA	20–99	● ACTIVE
Prop Shaft Supply INC	Delavan	WI	100–499	● ACTIVE
Protein Technologies INC	Tucson	AZ	—	● ACTIVE
Qiagen, LLC	Germantown	MD	—	● ACTIVE
Qiagen Sciences LLC	Germantown	MD	—	● ACTIVE
Q-tech CORP	Cypress	CA	—	● ACTIVE
Quality Coils, Incorporated	Bristol	CT	—	● ACTIVE
Quintron Instrument Company, INC.	New Berlin	WI	—	● ACTIVE
Rantec Microwave Systems, INC	Escondido	CA	—	● ACTIVE
Rapid Micro Biosystems, INC.	Lowell	MA	—	● ACTIVE
Rayco Electronic Manufacturing, INC.	Gardena	CA	—	● ACTIVE
Reidville Hydraulics & Mfg INC	Torrington	CT	—	● ACTIVE
Rki Instruments, INC.	Union City	CA	—	● ACTIVE
Robert H Wager CO INC	Rural Hall	NC	—	● ACTIVE
Robson Technologies, INC.	Morgan Hill	CA	—	● ACTIVE
Ruckus Wireless, LLC	Sunnyvale	CA	—	● ACTIVE
Rudolph Research Analytical Corporation	Hackettstown	NJ	—	● ACTIVE
Russells Technical Products INC	Holland	MI	20–99	● ACTIVE
Sapidyne Instruments INC.	Boise	ID	1–19	● ACTIVE
Sartron, INC	Newberg	OR	—	● ACTIVE
Seagate Technology LLC	Fremont	CA	—	● ACTIVE

FactoryRegistry lists 3,551 facilities whose primary industry classification is one of the 5 industries above. This is a list by industry, not a list of makers: Census reports that establishments in these industries produced process control 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 5 US manufacturing industries in the 2022 Economic Census, as the most specific line those industries reported. At least 45 establishments reported producing it; the count for 2 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 2017625000. 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.