Operating signal within 12 months from two or more independent sources.
What they make
Machine Shops332710- plastics CNC machining
- injection molding
- welding
- 3D printing
- carbon CNC machining
- metal CNC machining
- stamping
- aerospace
- defense
- space systems
- medical
NAMED ON THE COMPANY’S OWN WEBSITE, READ JUL 29, 2026
Where it is
Other plants nearby
| Facility | City | Industry | Status | Distance |
|---|---|---|---|---|
| Shore Western Mfg INC | Monrovia | Machine Shops 332710 | UNVERIFIED | 0.1 KM |
| Tessec Technology Services | Monrovia | Machine Shops 332710 | LIKELY ACTIVE | 0.6 KM |
| Mulgrew Aircraft Components, INC. | Monrovia | Hardware Manufacturing 332510 | ACTIVE | 1.4 KM |
| Eksakt Works INC. | Monrovia | Machine Shops 332710 | ACTIVE | 1.5 KM |
| Lintech Motion Control, INC | Monrovia | Ball and Roller Bearing Manufacturing 332991 | ACTIVE | 1.6 KM |
Also at this address
No other federal record shares this street address.
Where this record comes from
6 sources hold this plant, and 13 fields on this page come from them. Each line is one agency’s own record of it: the identifier it is filed under, whether that record shows the plant operating or only that it exists, and when the register first and last saw it there.
EPA cross-references this facility in CA-ENVIROVIEW, RCRAINFO · EPA site type STATIONARY.
- The company’s own websiteOPERATINGfirst seen JUL 2026 · last seen OCT 2026
- OSHA injury and illness reportsOPERATINGRecord 687041 · first seen DEC 2025 · last seen DEC 2025
- SAM.gov entity registrationOPERATINGRecord H2AUFMH45K24 · first seen OCT 2025 · last seen OCT 2025
- DOL Form 5500 retirement plan filingsOPERATINGRecord 952658203|CA|91016|330 w duarte rd · first seen MAR 2025 · last seen MAR 2025
- SBA Paycheck Protection Program loan recordsEXISTENCERecord CA|monrovia|330 w duarte rd · first seen APR 2020 · last seen APR 2020
- EPA Facility Registry ServiceEXISTENCERecord 110066004843 · first seen OCT 2015 · last seen OCT 2015
ALSO RECORDED ASRONCELLI PLASTICS
IN LOS ANGELES COUNTY478 other plants share this one’s industry (Machine Shops; Turned Product; and Screw, Nut, and Bolt Manufacturing, NAICS 3327); 148 of them have a size band on record.
What each source says
Every field below, as each source filed it. The value this page shows is marked; where the sources disagree, the field says so. Status is computed from independent sources; nothing here is self-reported unless marked Claimed.
- NameSOURCES DISAGREE
- EPA: RONCELLI PLASTICS · JUL 2026
- SAM.gov: RONCELLI PLASTICS INC · OCT 2025 · ON THIS PAGE
- Street address
- EPA: 330 W DUARTE RD · JUL 2026 · ON THIS PAGE
- SAM.gov: 330 W DUARTE RD · OCT 2025 · ON THIS PAGE
- City
- EPA: MONROVIA · JUL 2026 · ON THIS PAGE
- SAM.gov: MONROVIA · OCT 2025 · ON THIS PAGE
- State
- EPA: CA · JUL 2026 · ON THIS PAGE
- SAM.gov: CA · OCT 2025 · ON THIS PAGE
- County (FIPS code)
- EPA: 06037 · SEP 2026
- Coordinates
- EPA: 34.132222,-118.005787 · JUL 2026
- Employees (band)
- OSHA: 100-499 · DEC 2025
- Website
- SAM.gov: http://www.roncelli.com · OCT 2025
- CAGE code
- SAM.gov: 64328 · OCT 2025
- Retirement plan filing (Form 5500)
- DOL: 154 active participants, plan year ending 2025-03-31, 2 plan(s) · MAR 2025
- PPP loan
- SBA PPP: PPP loan x1, approved 2020-04-11, 141 jobs reported · APR 2020
- SAM registration expires
- SAM.gov: 2026-10-27 · OCT 2025
- State business registration
- TX Comptroller: RONCELLI PLASTICS INC, registered with the Texas Comptroller of Public Accounts; Corporation; active


