| APAlger Precision Machining LLC | Ontario | CA | Fabricated Metal Product Manufacturing332721 | 100-499 | ◐ LIKELY ACTIVE |
| AIAmd International Technologies LLC | Ontario | CA | Fabricated Metal Product Manufacturing332114 | 20-99 | ◐ LIKELY ACTIVE |
| DEDanco En, LLC | Ontario | CA | Fabricated Metal Product Manufacturing332813 | 20-99 | ◐ LIKELY ACTIVE |
| DMDanco Metal Surfacing | Ontario | CA | Fabricated Metal Product Manufacturing332813 | 20-99 | ◐ LIKELY ACTIVE |
| IPInland Powder Coating CORP | Ontario | CA | Fabricated Metal Product Manufacturing332812 | 20-99 | ◐ LIKELY ACTIVE |
Maney Aircraft, INC. | Ontario | CA | Fabricated Metal Product Manufacturing332710 | — | ◐ LIKELY ACTIVE |
| SMSummit Machining LLC | Ontario | CA | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| LFLevco Fab INC | Ontario | CA | Fabricated Metal Product Manufacturing332996 | 1-19 | ◐ LIKELY ACTIVE |
| JEJcm Engineering CORP | Ontario | CA | Fabricated Metal Product Manufacturing332710 | — | ◐ LIKELY ACTIVE |
| MCMmg CORP | Ontario | CA | Fabricated Metal Product Manufacturing332710 | — | ◐ LIKELY ACTIVE |
| SMSummit Machine, Inc. | Ontario | CA | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| CTCole Tool & Die Company | Ontario | OH | Fabricated Metal Product Manufacturing332116 | 20-99 | ◐ LIKELY ACTIVE |
| PMPr Machine Works, INC. | Ontario | OH | Fabricated Metal Product Manufacturing332999 | 20-99 | ◐ LIKELY ACTIVE |
| APAstro Pak Corporation - Ontario | Ontario | CA | Fabricated Metal Product Manufacturing332813 | 20-99 | ◐ LIKELY ACTIVE |
| ADAcademy Doors | Ontario | CA | Fabricated Metal Product Manufacturing332321 | — | ◐ LIKELY ACTIVE |
| BSBray Sales California | Ontario | CA | Fabricated Metal Product Manufacturing332911 | 20-99 | ◐ LIKELY ACTIVE |
| MWMelvin Wrought Iron Inc - Main Shop | Ontario | CA | Fabricated Metal Product Manufacturing332312 | 20-99 | ◐ LIKELY ACTIVE |
| SCSpecialty Coating Systems Ontario CA | Ontario | CA | Fabricated Metal Product Manufacturing332812 | 20-99 | ◐ LIKELY ACTIVE |
| WPWatsons Profiling CORP | Ontario | CA | Fabricated Metal Product Manufacturing332710 | — | ◐ LIKELY ACTIVE |