| PG Drives Technologies Limited ( Christchurch, GB ) | PGM, LLC ( Barrington, NJ ) | PGS Offshore Technology AS ( Lysaker, NO ) |
| PG Drives Technology Limited ( Christchurch, GB ) | PGN-ONE Inc. ( Southfield, MI ) | PGS Onshore, Inc. ( Houston, TX ) |
| PG Drives Technology Limited( Dorset ) | PGP Corporation ( Palo Alto, CA ) | PGS Reservoir Consultants AS( Lysaker ) |
| PG DRIVES TECHNOLOGY LTD. ( Dorset, GB ) | PGR Filters, L.L.C. ( Highlands, TX ) | PGT Industries, Inc. ( Nokomis, FL ) |
| PG Gun Ventures, LLC ( West Plains, MO ) | PGS America, Inc. ( Houston, TX ) | PGT Phontonics S.p.A.( Milan ) |
| PG Research Foundation ( Darien, IL ) | PGS AMERICAS, INC | PGT Photonics S.p.A.( Milan ) |
| PG Research Foundation, Inc. ( Darien, IL ) | PGS Americas, Inc. ( Houston, TX ) | PGT PHOTONICS S.P.A. ( Milan, IT ) |
| PGA Electronic( Chateauroux ) | PGS Data Processing, Inc. ( Houston, TX ) | PG-TXL Company, L.P. |
| PGB Partnership ( Las Vegas, NV ) | PGS Exploration | PG-TXL Company, L.P. ( Houston, TX ) |
| PGG Industries Ohio, Inc. ( Cleveland, OH ) | PGS Geophysical( Lysaker ) | PGx Health, LLC ( Newton, MA ) |
| PGI International, Inc. ( Houston, TX ) | PGS Geophysical AS | PGxHealth LLC ( New Haven, CT ) |
| PGI International, Ltd ( Houston, TX ) | PGS Geophysical AS( Lysaker ) | PGxHealth, LLC ( Newton, MA ) |
| PGI International, Ltd. ( Houston, TX ) | PGS Geophysical AS ( Lysaker, NO ) | PH Hydraulics, Inc. ( Columbus, OH ) |
| PGI Polymer, Inc. | PGS Geopysical AS( Lysaker ) | PH Pool Services Limited |
| PGI Polymer, Inc. ( Charlotte, NC ) | PGS Norway Geophysical AS( Lysaker ) | PH&T S.p.A.( Milan ) |
| PGM Products, LLC ( Barrington, NJ ) | PGS Norway Geophysical AS ( Lysaker, NO ) | PH.B INNOVATIONS SARL ( Strasbourg, FR ) |
| PGM Refining Inc.( Toronto ) | PGS Offshore Technology AS( Lysaker ) | |
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