| GIGarfam Industries, INC. | Houston | — | ◇ UNVERIFIED |
| GGGates Galore | Houston | — | ◇ UNVERIFIED |
| GBGeneral Body Manufacturing | Houston | — | ◇ UNVERIFIED |
| GOGe Oil & Gas, INC. | Houston | — | ◇ UNVERIFIED |
| GSGp Steel Fabrication | Houston | — | ◇ UNVERIFIED |
| GTGreat Tooling Supply, LLC | Houston | — | ◇ UNVERIFIED |
| GMGreenwood Manufacturing INC. | Houston | — | ◇ UNVERIFIED |
 Gretna Machine Shop, INC. | Houston | — | ◇ UNVERIFIED |
| GTGrinding Technology LLC | Houston | — | ◇ UNVERIFIED |
| GGGruppo Galperti Production | Houston | — | ◇ UNVERIFIED |
| HMHager Machine and Tool, INC. | Houston | — | ◇ UNVERIFIED |
| HEHalliburton Energy Services Sawyer | Houston | — | ◇ UNVERIFIED |
| HFHerrera Fabricating INC. | Houston | — | ◇ UNVERIFIED |
| HIHesse Industrial Sales INC. Dba Texas Manufacturin | Houston | — | ◇ UNVERIFIED |
| HSHigh Standard Manufacturing Company, INC. | Houston | — | ◇ UNVERIFIED |
| HMHightower Metal Works | Houston | — | ◇ UNVERIFIED |
| HPHNH Properties LLC | Houston | — | ◇ UNVERIFIED |
| HOHouse of Forgings, LLC | Houston | — | ◇ UNVERIFIED |
| HEHouston Etching Company | Houston | — | ◇ UNVERIFIED |
| HFHouston Fab Truck Rigging INC. | Houston | — | ◇ UNVERIFIED |
| HHHouston Heat Treating Division of Bodycote Lindberg | Houston | — | ◇ UNVERIFIED |
| HPHouston Plant & Forklift | Houston | — | ◇ UNVERIFIED |
| HPHouston Process and Design | Houston | — | ◇ UNVERIFIED |
| HPHouston Process and Design | Houston | — | ◇ UNVERIFIED |
| HSHou-Tex Sheet Metal, Inc. | Houston | — | ◇ UNVERIFIED |
| HHwj-mcs-amp | Houston | — | ◇ UNVERIFIED |
| HHycalog | Houston | — | ◇ UNVERIFIED |
| IPIgloo Prods CORP | Houston | — | ◇ UNVERIFIED |
| IRIgs Robert James | Houston | — | ◇ UNVERIFIED |
| IZImi Zimmermann and Jansen | Houston | — | ◇ UNVERIFIED |
| ILIndustries Little York LLC | Houston | — | ◇ UNVERIFIED |
| ICIngram Cactus | Houston | — | ◇ UNVERIFIED |
| IMIn-tech Manufacturing LLC | Houston | — | ◇ UNVERIFIED |
| IGIntermetallic Group, LLC | Houston | — | ◇ UNVERIFIED |
| IAIron Access, INC. | Houston | — | ◇ UNVERIFIED |
| JBJ & B Fasteners, LP | Houston | — | ◇ UNVERIFIED |
| JBJedco Building Systems, INC. | Houston | — | ◇ UNVERIFIED |
| JLJ & L Sheet Metal Company INC. | Houston | — | ◇ UNVERIFIED |
| JVJohn Voss Plating | Houston | — | ◇ UNVERIFIED |
| JUJpf Ultrasonic Technologies, INC. | Houston | — | ◇ UNVERIFIED |
| KCKimHoward Corporation | Houston | — | ◇ UNVERIFIED |
 Kmec Engineering & Conveying Systems LLC | Houston | — | ◇ UNVERIFIED |
| KKnust-sbo | Houston | — | ◇ UNVERIFIED |
| KIKolimetics, INC | Houston | — | ◇ UNVERIFIED |
| KEKswc Engineering & Machining | Houston | — | ◇ UNVERIFIED |
| LHLake Houston | Houston | — | ◇ UNVERIFIED |
| LCLangham Creek Machine Work, INC. | Houston | — | ◇ UNVERIFIED |
| LHLark Heat Treating | Houston | — | ◇ UNVERIFIED |
| LMLODA Mud Motor Bearings Inc. | Houston | — | ◇ UNVERIFIED |
| LPLogik Precision, INC. | Houston | — | ◇ UNVERIFIED |
