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| Name | | State or Other Jurisdiction of Incorporation |
| Bacharach Holding Corp. | | Delaware |
| Compañia MSA de Argentina S.A. | | Argentina |
| General Monitors Ireland Limited | | Ireland |
| General Monitors, Inc. | | Nevada |
| Globe Holding Company, LLC | | New Hampshire |
| Latchways plc | | United Kingdom |
| MSA (China) Safety Equipment Co. Ltd. | | China |
| MSA (Suzhou) Safety Equipment R&D Co., Ltd | | China |
| MSA Advanced Detection, LLC | | Pennsylvania |
| MSA Canada Inc. | | Canada |
| MSA de Chile Ltda. | | Chile |
| MSA de Mexico, S.A. de C.V. | | Mexico |
| MSA do Brasil Ltda. | | Brazil |
| MSA Europe GmbH | | Switzerland |
| MSA Europe Holdings GmbH | | Germany |
| MSA Gallet Holdings SAS | | France |
| MSA Innovation, LLC | | Pennsylvania |
| MSA International Holdings B.V. | | Netherlands |
| MSA International, LLC | | Delaware |
| MSA Italia S.R.L. | | Italy |
| MSA Nederland B.V. | | Netherlands |
| MSA Polska Sp. z o.o. | | Poland |
| MSA Produktion Deutschland GmbH | | Germany |
| MSA S.E. Asia Pte. Ltd. | | Singapore |
| MSA Safety Development, LLC | | Pennsylvania |
| MSA Safety Incorporated | | Pennsylvania |
| MSA Safety Jacksonville Manufacturing, LLC | | Pennsylvania |
| MSA Safety Malaysia Sdn. Bhd. | | Malaysia |
| MSA Safety Pittsburgh Manufacturing, LLC | | Pennsylvania |
| MSA Safety Sales, LLC | | Pennsylvania |
| MSA Safety Services GmbH | | Germany |
| MSA Spain S.L.U. | | Spain |
| MSA Technologies and Enterprise Services GmbH | | Germany |
| MSA Technology, LLC | | Pennsylvania |
| MSA Worldwide, LLC | | Pennsylvania |
| Samsac Holdings (Pty.) Limited | | South Africa |
| Senscient, Ltd. | | United Kingdom |