HMH Holding Inc. supplies offshore and onshore oil and gas drilling equipment, systems, and services in the United States and Norway. Its offerings include drilling equipment packages for newbuild or reactivated rigs, individual or grouped drilling and pressure control components, and aftermarket services such as replacement parts, overhaul and repair, recertifications, field labor, and integrated digital solutions. The company serves drilling contractors, oil and gas E&P and mining operators, shipyards, and capital equipment manufacturers, as well as the onshore and subsea mining industry. Its equipment falls into two categories: pressure control systems, including blowout preventers (BOPs), BOP control systems, drilling risers, and wellhead connectors; and topside equipment, comprising hoisting and rotating systems (top drive, iron roughneck, pipe handling, derrick, and drawworks) and drilling circulating systems (mud pumps, slurry pumps, and mud mixing and control systems). Founded in 1895, HMH Holding Inc. is headquartered in Houston, Texas.