| Ateb, Inc. | A-Tech Engineering Co., Ltd.( Kyungki-do ) | ATEC-Weiss GmbH Co. KG( Vreden ) |
| ATEBA Automatisieren-Technik Bauen fur Gewerbe und Industrie GmbH ( Konigstein, DE ) | Atech Flash Technology, Inc. ( Fremont, CA ) | Atec-Weiss KG ( Vreden, DE ) |
| Atec Advanced Thermal and Environmental Concepts ( College Park, MD ) | Atech Innovations GmbH | Atek Inc. ( Santa Ana, CA ) |
| ATEC Co. Ltd.( Kyoto ) | Atech Innovations GmbH( Gladbeck ) | A-Teknik Alf Sundberg Aktiebolag( Sollentuna ) |
| Atec Corporation ( College Park, MD ) | ATECH INNOVATIONS GMBH ( Gladbeck, DE ) | ATELIER 38 CO., LTD. ( Tokyo, JP ) |
| ATEC OPTICAL CO., LTD. | A-Tech Ltd. Republic of Korea | atelier Adime' Internationale, Incorporated ( Chicago, IL ) |
| Atec Pharmatechnik GmbH | A-Tech Solution Co., Ltd.( Gyeonggi-do ) | Atelier America, Inc. ( Ontario, CA ) |
| Atec Pharmatechnik GmbH( Soerup ) | Atech Technology Co. Ltd.( Taipei ) | Atelier Bunz GmbH( Dobel ) |
| A-Tec Subsystem Inc.( Taipei ) | ATECH TECHNOLOGY CO., LTD. | Atelier de Construction Steiger S.A.( Vionnaz ) |
| Atec, Inc. ( College Park, MD ) | Atech Technology Co., Ltd.( Taipei ) | Atelier d''Usinage Cloutier Inc. ( Louiseville, Quebec ) |
| ATECA( Montauban ) | Atecs Mannesmann AG | Atelier D'Usinage Laquerre Fils( Evain ) |
| ATECA ( Montauban, FR ) | Atecs Mannesmann AG( Dusseldorf ) | Atelier D''Usinage Laquerre & Fils( Evain ) |
| Ateca( Mountauban ) | Atecs Mannesmann GmbH( Dusseldorf ) | Atelier Systemes de Protection SAS( Eulmont ) |
| Ateca( Verlhaguet Montauban ) | ATEC-WEISS GMBH CO. KG | Ateliers A.S.( Pierre Benite ) |
| Ateca RDM ( Montauban, FR ) | Atec-Weiss GmbH Co. KG( Vreden ) | Ateliers Bretons de Realisations Ferroviaires ( Chateaubriand, FR ) |
| A-Tech Corporation ( Albuquerque, NM ) | Atec-Weiss GmbH & Co KG( Vreden ) | Ateliers Busch S.A.( Chevenez ) |
| A-TECH Engineering Co., Ltd. | Atec-Weiss GmbH & Co. KG( Vreden ) | |