Facility	City	Industry	Status	Distance
Hallmark Circuits INC	Poway	Bare Printed Circuit Board Manufacturing 334412	LIKELY ACTIVE	0.0 KM
Varian INC	Poway	Bare Printed Circuit Board Manufacturing 334412	UNVERIFIED	0.2 KM
Data Device CORP	Poway	Semiconductor and Related Device Manufacturing 334413	ACTIVE	0.4 KM
Epc Power CORP.	Poway	Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals 334515	ACTIVE	0.5 KM
Dragonfish Manufacturing LLC	Poway	Electronic Connector Manufacturing 334417	ACTIVE	0.6 KM

Every listed plant in San Diego County

Also at this address

1 other record shares this street address. Separate filings can describe distinct businesses on one site, or the same plant recorded by different agencies, so every record is kept rather than merged away.

Hallmark Circuits INC

Poway, CA

LIKELY ACTIVE334412

WHERE THIS RECORD COMES FROM — 3 FEDERAL SOURCES, 8 FIELDS

Every fact on this page traces to a public federal filing. The table below names which register holds this facility, whether that register proves the plant operates or only that it exists, and when each of them last saw it.

EPA cross-references this facility in CARB-TCH · EPA site type STATIONARY.

Source	Evidence	First seen	Last seen
SAM GOV	OPERATING	MAR 2026	MAR 2026
OSHA ITA	OPERATING	DEC 2025	DEC 2025
EPA FRS	EXISTENCE	AUG 2024	AUG 2024

FIELD BY FIELD — WHICH SOURCE SUPPLIED WHAT

FIELD	SOURCE	SIGNAL
ADDRESS LINE1	EPA FRS	JUL 2026
ADDRESS LINE1	SAM GOV	MAR 2026
CAGE CODE	SAM GOV	MAR 2026
CITY	EPA FRS	JUL 2026
CITY	SAM GOV	MAR 2026
EMPLOYEE BAND	OSHA ITA	DEC 2025
GEOM	CENSUS GEOCODER	JUL 2026
NAME	EPA FRS	JUL 2026
NAME	SAM GOV	MAR 2026
REGISTRATION EXPIRATION	SAM GOV	MAR 2026
STATE	EPA FRS	JUL 2026
STATE	SAM GOV	MAR 2026

Status is computed from independent sources; nothing here is self-reported unless marked Claimed.

Report a correction · Request removal