| MIMdj Industrial LLC | Houston | — | ◐ LIKELY ACTIVE |
| MCMet Company Manufacturing & Industrial Services LLC | Houston | — | ◐ LIKELY ACTIVE |
| MHMiner - Houston | Houston | 20–99 | ◐ LIKELY ACTIVE |
| MMM & M Coastal Manufacturing - Houston | Houston | 100–499 | ◐ LIKELY ACTIVE |
| MHM&m Hou | Houston | 20–99 | ◐ LIKELY ACTIVE |
| MSMurphy Sales, INC | Houston | — | ◐ LIKELY ACTIVE |
| NINailor Industries of Texas - Mesa | Houston | 100–499 | ◐ LIKELY ACTIVE |
| NINailor Industries of Texas - Rankin | Houston | 20–99 | ◐ LIKELY ACTIVE |
| NENew England Lead Burning Company, Inc. - Houston | Houston | 20–99 | ◐ LIKELY ACTIVE |
| NCNikkiso Cryogenic Industries Service Companies Houston | Tomball | 20–99 | ◐ LIKELY ACTIVE |
| NNorthchase | Houston | 100–499 | ◐ LIKELY ACTIVE |
| NENuena Enterprises, LLC | Houston | — | ◐ LIKELY ACTIVE |
| PEPanelmatic Electrical Solutions LLC | Houston | — | ◐ LIKELY ACTIVE |
| PMPdq Machine Shop, INC | Houston | — | ◐ LIKELY ACTIVE |
| PAPerry Allen Hoffman | Cypress | — | ▲ REPORTED CLOSED |
| PSPHP Systems and design | Houston | 20–99 | ◐ LIKELY ACTIVE |
| PSPineda Strategies LLC | Houston | — | ◐ LIKELY ACTIVE |
| PMPinnacle Machine Holdings - Sheldon Rd | Houston | 20–99 | ◐ LIKELY ACTIVE |
| PPPiping Products, Inc. | Houston | 20–99 | ◐ LIKELY ACTIVE |
| PIPK Industrial, LLC (Jacinto City, TX) | Jacinto City | 100–499 | ◐ LIKELY ACTIVE |
| PPPlug Power: Houston, TX Manufacturing Facility | Houston | 100–499 | ◐ LIKELY ACTIVE |
| PNP & N Machine Co., Inc. | Houston | 20–99 | ◐ LIKELY ACTIVE |
| PFPrecision Flange & Machine INC | Houston | 100–499 | ◐ LIKELY ACTIVE |
| PWPrecision Welding & Fabrication | Houston | 1–19 | ◐ LIKELY ACTIVE |
| PEProinlosa Energy Corporation | Houston | — | ◐ LIKELY ACTIVE |
| PTProsource Trace-a-matic LLC | Houston | — | ◐ LIKELY ACTIVE |
| RRankin | Hosuton | 20–99 | ◐ LIKELY ACTIVE |
| RCReady Cable - Houston | Houston | 20–99 | ◐ LIKELY ACTIVE |
| RSRebar Supply Co. Ltd. | Houston | 20–99 | ◐ LIKELY ACTIVE |
| RHRodney Hunt INC | Houston | — | ◐ LIKELY ACTIVE |
 Rogue Precision Manufacturing LLC | Tomball | — | ◐ LIKELY ACTIVE |
 Rotating Machinery Services / Breaux Machine Works | Tomball | 20–99 | ◐ LIKELY ACTIVE |
 Rs Hughes CO INC | Houston | — | ◐ LIKELY ACTIVE |
| STSae Towers Limited | Houston | — | ◐ LIKELY ACTIVE |
| SHSam Houston Parkway | Houston | 20–99 | ◐ LIKELY ACTIVE |
| SHSchuetz - Houston Steel Drum Plant | Pasadena | 20–99 | ◐ LIKELY ACTIVE |
| SLScreenfab LLC - Houston | Houston | 20–99 | ◐ LIKELY ACTIVE |
| SSSefton Steel, LP. | Houston | 20–99 | ◐ LIKELY ACTIVE |
| SPShawcor Pipe Protection LLC - Channelview | Channelview | 100–499 | ◐ LIKELY ACTIVE |
| SSheldon | Channelview | 1–19 | ◐ LIKELY ACTIVE |
| SSommermeyer | Houston | 20–99 | ◐ LIKELY ACTIVE |
| SHSouthern Heat Exchanger Services | Houston | 20–99 | ◐ LIKELY ACTIVE |
 Special Quality Alloys, INC | Humble | — | ◐ LIKELY ACTIVE |
| SPStar Pipe Products LTD | Houston Texas | 100–499 | ◐ LIKELY ACTIVE |
| SGSteel Goode Products- DBA Aalberts- Houston | Houston | 20–99 | ◐ LIKELY ACTIVE |
| SMSteffani Metals, INC. | Houston | 1–19 | ◐ LIKELY ACTIVE |
| SWSullivan Wire Rope & Rigging INC | Houston | — | ◐ LIKELY ACTIVE |
 Talons Garage LLC | Houston | — | ◐ LIKELY ACTIVE |
| TTTejas Tubular Product- Corporate | Houston | 20–99 | ◐ LIKELY ACTIVE |
| TTTejas Tubular Products Casing | Houston | 100–499 | ◐ LIKELY ACTIVE |
