 Angeles Precision Engineering, INC. | Ontario | CA | Primary Metal Manufacturing331111 | — | ● ACTIVE |
 Calidad, INC. | Ontario | CA | Primary Metal Manufacturing331491 | — | ● ACTIVE |
| CDCalifornia Die Casting INC | Ontario | CA | Primary Metal Manufacturing331521 | 20-99 | ◐ LIKELY ACTIVE |
| NSNet Shapes, INC. | Ontario | CA | Primary Metal Manufacturing331512 | — | ◇ UNVERIFIED |
| BSBarnmaster Supply LLC Dba Marnmaster | Ontario | CA | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| APAdvanced Pattern and Mold | Ontario | CA | Primary Metal Manufacturing331313 | — | ◇ UNVERIFIED |
| AAAlum Alloy CO INC | Ontario | CA | Primary Metal Manufacturing331521 | — | ◇ UNVERIFIED |
| PAPerformance Aluminum Prod | Ontario | CA | Primary Metal Manufacturing331521 | — | ◇ UNVERIFIED |
| COCity of Ontario | Ontario | CA | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| DHDouglas-kent Holdings, LLC | Ontario | CA | Primary Metal Manufacturing331221 | — | ◇ UNVERIFIED |
| FDFlow Dynamics INC | Ontario | CA | Primary Metal Manufacturing331513 | — | ◇ UNVERIFIED |
| KLKim Lighting | Ontario | CA | Primary Metal Manufacturing331521 | — | ◇ UNVERIFIED |
| LPLynwood Pattern | Ontario | CA | Primary Metal Manufacturing331523 | — | ◇ UNVERIFIED |
| MEMvi Engineering & Manufacturing INC | Ontario | CA | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
| NSNet Shapes INC | Ontario | CA | Primary Metal Manufacturing331512 | — | ◇ UNVERIFIED |
| NSNet Shapes INC | Ontario | CA | Primary Metal Manufacturing331512 | — | ◇ UNVERIFIED |
| OCOntario Castings, Performance Aluminum Products, Reeds Patterns & Molds, R&S ... | Ontario | CA | Primary Metal Manufacturing331524 | — | ◇ UNVERIFIED |
| OEOntario Extrusions, INC. | Ontario | CA | Primary Metal Manufacturing331313 | — | ◇ UNVERIFIED |
| PAPerformance Aluminum Products | Ontario | CA | Primary Metal Manufacturing331523 | — | ◇ UNVERIFIED |
| SRSanta Rosa Lead Products LLC | Ontario | CA | Primary Metal Manufacturing331492 | — | ◇ UNVERIFIED |
| TCThe Carlstar Group LLC | Ontario | CA | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
| TFTriangle Fasteners INC | Ontario | CA | Primary Metal Manufacturing331492 | — | ◇ UNVERIFIED |
