Vishay Spectrol
4051 Greystone Dr, Ontario, CA 91761
LIKELY ACTIVELAST SEEN IN FEDERAL DATA DEC 2025 · 3 SOURCES
Operating signal within 24 months, or from a single source.
What they make
Computer and Electronic Product Manufacturing334000Where it is
34.02773, -117.56511 · CENSUS TIGER
Other plants nearby
| Facility | City | Industry | Status | Distance |
|---|---|---|---|---|
| Lockheed Martin Electro Optical | Pomona | Computer and Electronic Product Manufacturing 334000 | UNVERIFIED | 17.8 KM |
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.
WHERE THIS RECORD COMES FROM — 3 FEDERAL SOURCES, 7 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 HWTS-DATAMART, NPDES, RCRAINFO, TRIS · EPA site type STATIONARY.
| Source | Evidence | First seen | Last seen |
|---|---|---|---|
| OSHA ITA | OPERATING | DEC 2025 | DEC 2025 |
| EPA ECHO | OPERATING | JAN 2022 | JAN 2022 |
| EPA FRS | EXISTENCE | JUN 2017 | JUN 2017 |
FIELD BY FIELD — WHICH SOURCE SUPPLIED WHAT
| FIELD | SOURCE | SIGNAL |
|---|---|---|
| ADDRESS LINE1 | EPA FRS | JUL 2026 |
| CITY | EPA FRS | JUL 2026 |
| EMPLOYEE BAND | OSHA ITA | DEC 2025 |
| GEOM | EPA FRS | JUL 2026 |
| NAME | EPA FRS | JUL 2026 |
| RCRA GENERATOR STATUS | EPA ECHO | AUG 2026 |
| STATE | EPA FRS | JUL 2026 |
Status is computed from independent sources; nothing here is self-reported unless marked Claimed.