| MHMetals House INC | Houston | TX | Machinery Manufacturing333319 | — | ◇ UNVERIFIED |
| MIMetox International | Houston | TX | Electrical Equipment, Appliance & Component Manufacturing335931 | — | ◇ UNVERIFIED |
| MIMillar Instruments | Houston | TX | Computer and Electronic Product Manufacturing334519 | — | ◇ UNVERIFIED |
| MIMirror Industries | Houston | TX | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| MIMississippi Investment Petroleum Company | Houston | MS | Chemical Manufacturing325110 | — | ◇ UNVERIFIED |
| MCMuehlstein Compounded Products | Houston | TX | Chemical Manufacturing325991 | — | ◇ UNVERIFIED |
| MCMw Components - Houston Fasteners | Houston | TX | Fabricated Metal Product Manufacturing332722 | — | ◇ UNVERIFIED |
| NONational Oilwell Varco | Houston | TX | Machinery Manufacturing333132 | — | ◇ UNVERIFIED |
| NONational Oilwell Varco LP | Houston | TX | Plastics and Rubber Products Manufacturing326122 | — | ◇ UNVERIFIED |
| NFNhr Facility | Houston | TX | Machinery Manufacturing333132 | — | ◇ UNVERIFIED |
| NINiltronix INC | Houston | TX | Computer and Electronic Product Manufacturing334412 | — | ◇ UNVERIFIED |
| NMNrg Maintenance Services | Houston | TX | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| NNvent | Houston | TX | Electrical Equipment, Appliance & Component Manufacturing335999 | — | ◇ UNVERIFIED |
| OIOfs International Houston Plant | Houston | TX | Fabricated Metal Product Manufacturing332996 | — | ◇ UNVERIFIED |
| OIOilfield-electric-marine INC | Houston | TX | Electrical Equipment, Appliance & Component Manufacturing335313 | — | ◇ UNVERIFIED |
| OSOil States Industries | Houston | TX | Machinery Manufacturing333132 | — | ◇ UNVERIFIED |
 Oil States Industries, INC. - Mmc | Houston | TX | Machinery Manufacturing333132 | — | ◇ UNVERIFIED |
| OPOldcastle Precast | Houston | TX | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| OSO'neal Steel INC | Houston | TX | Fabricated Metal Product Manufacturing332999 | — | ◇ UNVERIFIED |
| OOteco | Houston | TX | Fabricated Metal Product Manufacturing332919 | — | ◇ UNVERIFIED |
| PKPelletizer Knives | Houston | TX | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| PBPepsi Bottling Group | Houston | TX | Beverage and Tobacco Product Manufacturing312111 | — | ◇ UNVERIFIED |
| PPPerformance Plastic Produ | Houston | TX | Plastics and Rubber Products Manufacturing326121 | — | ◇ UNVERIFIED |
| PIPgi International | Houston | TX | Fabricated Metal Product Manufacturing332721 | — | ◇ UNVERIFIED |
| PIPlexmar Incorporated | Houston | TX | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| PIPowell Industries Offshore | Houston | TX | Fabricated Metal Product Manufacturing332311 | — | ◇ UNVERIFIED |
| PSPraxair Surface Technologies INC | Houston | TX | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| PSPrecision Spray & Coatings | Houston | TX | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| PEPrince Energy LLC | Houston | TX | Chemical Manufacturing325220 | — | ◇ UNVERIFIED |
| PMPrince Minerals | Houston | TX | Chemical Manufacturing325220 | — | ◇ UNVERIFIED |
| PPPro Plastics Baythorne Facility | Houston | TX | Plastics and Rubber Products Manufacturing326111 | — | ◇ UNVERIFIED |
| PPPro Plastics Windfern Facility | Houston | TX | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| PPulspray-keith | Houston | TX | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| QPQuality Product Finishing | Houston | TX | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| QCQuest Chemical CORP | Houston | TX | Chemical Manufacturing325611 | — | ◇ UNVERIFIED |
| QMQuietflex Mfg CO LP | Houston | TX | Nonmetallic Mineral Product Manufacturing327993 | — | ◇ UNVERIFIED |
| RHReed Hycalog LP | Houston | TX | Machinery Manufacturing333132 | — | ◇ UNVERIFIED |
| RSRelevant Solutions | Houston | TX | Machinery Manufacturing333319 | — | ◇ UNVERIFIED |
| RCRepipe Construction | Houston | TX | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| RMRinker Materials Hydro Conduit | Houston | TX | Nonmetallic Mineral Product Manufacturing327332 | — | ◇ UNVERIFIED |
 Riviana Foods Houston | Houston | TX | Food Manufacturing311423 | — | ◇ UNVERIFIED |
| RERti Extrusions | Houston | TX | Primary Metal Manufacturing331491 | — | ◇ UNVERIFIED |
| SSSampson Street Facility | Houston | TX | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| SMSandvik Materials Technology | Houston | TX | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
| SESec Energy Products and Services LP | Houston | TX | Fabricated Metal Product Manufacturing332996 | — | ◇ UNVERIFIED |
| SSepramet | Houston | TX | Primary Metal Manufacturing331492 | — | ◇ UNVERIFIED |
| SFSercel Fallstone | Houston | TX | Computer and Electronic Product Manufacturing334417 | — | ◇ UNVERIFIED |
| STService Transport Company | Houston | TX | Transportation Equipment Manufacturing336999 | — | ◇ UNVERIFIED |
| SWService Wire CO | Houston | TX | Primary Metal Manufacturing331420 | — | ◇ UNVERIFIED |
| SWShinko Wire America,inc. | Houston | TX | Primary Metal Manufacturing331222 | — | ◇ UNVERIFIED |
