Allegion plc manufactures and sells mechanical and electronic security products and solutions worldwide. The company offers door closers, controls, and exit devices; locks, locksets, portable locks, and key systems and services; electronic security products and access control systems; time, attendance, and workforce productivity systems; doors and door systems; and other accessories.

MSA Safety Incorporated develops, manufactures, and supplies safety products that protect people and facility infrastructures in the oil, gas, petrochemical, fire service, construction, industrial manufacturing applications, utilities, military, and mining industries in North America, Latin America, and internationally.

Resideo Technologies, Inc. develops, manufactures, and sells comfort, residential thermal, and security solutions to the commercial and residential end markets in the United States, Europe, and internationally.

NL Industries, Inc., through its subsidiary, CompX International Inc., operates in the component products industry in the United States and internationally.

The Brink's Company provides secure transportation, cash management, and other security-related services in North America, Latin America, Europe, and internationally. The company offers armored vehicle transportation of valuables; automated teller machine (ATM) management services, such as cash replenishment, replenishment forecasting, cash optimization, ATM remote monitoring, service call dispatching, transaction processing, installation, and first and second line maintenance services; network infrastructure; and cash-in-transit services.

Mistras Group, Inc. provides technology-enabled asset protection solutions worldwide. The company operates through three segments: Services, International, and Products and Systems.