| Exhibit 21.1 | |||||||||||
| Legal Name | Jurisdiction | ||||||||||
| 3S Incorporated | Indiana | ||||||||||
| Chubb Australia Pty Ltd. | Australia | ||||||||||
| A. P. I. Inc. | Minnesota | ||||||||||
| A.P.I. Garage Door, Inc. | Minnesota | ||||||||||
| Chubb Fire & Security Pty Ltd | Australia | ||||||||||
| American Fire Protection Group, Inc. | Minnesota | ||||||||||
| APi Acquisition IV, Inc. | Minnesota | ||||||||||
| APi Acquisition V, Inc. | Minnesota | ||||||||||
| APi Acquisition, Inc. | Minnesota | ||||||||||
| APi Group Corporation | Delaware | ||||||||||
| APi Group DE, Inc. | Delaware | ||||||||||
| Chubb Properties Pty Ltd | Australia | ||||||||||
| Chubb Osterreich GmbH | Austria | ||||||||||
| APi Group, Inc. | Minnesota | ||||||||||
| APi Indiana, Inc. | Minnesota | ||||||||||
| APi International, LLC | Minnesota | ||||||||||
| APi Group Finance, Inc. | Minnesota | ||||||||||
| APi National Service Group, Inc. | Minnesota | ||||||||||
| APi Real Estate, LLC | Minnesota | ||||||||||
| Saval NV | Belgium | ||||||||||
| Somati Systems NV | Belgium | ||||||||||
| Vita Nova Supra BVBA | Belgium | ||||||||||
| Security Monitoring Centre BVBA/SPRL | Belgium | ||||||||||
| Classic Industrial Services, Inc. | Delaware | ||||||||||
| Chubb Security Systems BVBA | Belgium | ||||||||||
| Cream Ridge Construction Co., Inc. | New Jersey | ||||||||||
| Creamer Jingoli LLC | New Jersey | ||||||||||
| Creamer Ruberton A Joint Venture LP | New Jersey | ||||||||||
| Creamer Sanzari Joint Venture | New Jersey | ||||||||||
| 6232698 Canada Inc. (Direct Fire Protection Systems) | Canada | ||||||||||
| APi Group Holdings Canada ULC | Canada | ||||||||||
| Davis-Ulmer Sprinkler Company, Inc. | New York | ||||||||||
| Atlantic Alarm & Sound, Inc. | Canada | ||||||||||
| CanAm Fire Protection, Inc. | Canada | ||||||||||
| Forbes Fire Protection Services, Inc. | Canada | ||||||||||
| Summit Pipeline Services ULC | Canada | ||||||||||
| Grunau Company, Inc. | Wisconsin | ||||||||||
| Train Oilfield Services LTD | Canada | ||||||||||
| ICS, Inc. | North Dakota | ||||||||||
| International Fire Protection, Inc. | Alabama | ||||||||||
| Island Fire Sprinkler, Inc. | New York | ||||||||||
| Island Fire Sprinkler-NYC, LLC | New York | ||||||||||
| J. Fletcher Creamer & Son, Inc. | New Jersey | ||||||||||
| JFC-NER LLC | New Jersey | ||||||||||
| Jomax Construction Company, Inc. | Kansas | ||||||||||
| K & M Fire Protection Services, Inc. | Connecticut | ||||||||||
| K&M Fire N.Y.C., LLC | New York | ||||||||||
| Vipond, Inc. | Canada | ||||||||||
| Chubb Fire & Security Canada Corporation | Canada | ||||||||||
| LeJeune Steel Company | Minnesota | ||||||||||
| Metropolitan Mechnical Contractors, Inc. | Minnesota | ||||||||||
| Mid-Ohio Pipeline Company Inc. | Ohio | ||||||||||
| Mid-Ohio Pipeline Services, LLC | Ohio | ||||||||||
| MMC Holdings, LLC | Minnesota | ||||||||||
| MP Nexlevel of California, Inc. | Minnesota | ||||||||||
| MP Nexlevel, LLC | Minnesota | ||||||||||
| MP Technologies, LLC | Minnesota | ||||||||||
| Nexlevel Inc. | Minnesota | ||||||||||
| Nexus Alarm & Suppression, Inc. | Wyoming | ||||||||||
| Counterforce Corporation | Canada | ||||||||||
| 2573342 Alberta Ltd. | Canada | ||||||||||
| Beijing Chubb Fire Security Systems Co., Limited | China | ||||||||||
| Shanghai Chubb Intelligent Building Systems Co., Ltd. | China | ||||||||||
| Northern Air Corporation | Minnesota | ||||||||||
| Northland Constructors of Duluth, Inc. | Minnesota | ||||||||||
| PSL Supply, LLC | New York | ||||||||||
| APi Group France HoldCo SAS | France | ||||||||||
| Chubb France | France | ||||||||||
| Chubb EMEA | France | ||||||||||
| Delta Security Solutions Holding SAS | France | ||||||||||
| Delta Security Solutions SA | France | ||||||||||
| Sprinkler Acquisition LLC | Minnesota | ||||||||||
| Chubb Delta Telesurveillance | France | ||||||||||
| CEMIS Systemes de Securite Incendie | France | ||||||||||
| Sprocket Insurance Company | Vermont | ||||||||||
| T. Texas Sprinkler, L.P. | Texas | ||||||||||
| Technologies Inc. | Minnesota | ||||||||||
| Tenet Corp | Minnesota | ||||||||||
| Tessier’s Inc. | South Dakota | ||||||||||
| TEXASSPRINKLER, LLC | Arkansas | ||||||||||
| The Jamar Company | Minnesota | ||||||||||
| TL Nexlevel Companies, LLC | Minnesota | ||||||||||
| TLR Consulting, Inc. | Minnesota | ||||||||||
| Chubb Deutschland GmbH | Germany | ||||||||||
| United Piping, Inc. | Minnesota | ||||||||||
| United States Alliance Fire Protection, Inc. | Delaware | ||||||||||
| Viking Automatic Sprinkler Company | Minnesota | ||||||||||
| Chubb China Holdings Ltd | Hong Kong | ||||||||||
| Chubb China Limited | Hong Kong | ||||||||||
| Chubb Hong Kong Limited | Hong Kong | ||||||||||
| Access Control Systems Ltd. | Hong Kong | ||||||||||
| W&M Sprinkler Company, Inc. | New York | ||||||||||
| W&M Sprinkler-NYC, LLC | New York | ||||||||||
| APi Group Life Safety USA LLC | Minnesota | ||||||||||
| Wright Service Center, LLC | Minnesota | ||||||||||
| Chubb Systems Pvt. Ltd. | India | ||||||||||
| Chubb Ireland Limited | Ireland | ||||||||||
| MSC Fire Products Limited | Ireland | ||||||||||
| APi Group Finco Limited | Ireland | ||||||||||
| APi Group Treasury Limited | Ireland | ||||||||||
| Chubb Macau Limited | Macau | ||||||||||
| Three S. Inc. de Mexico S de RL de CV | Mexico | ||||||||||
| SNC Sicli & Cie (Protecsud Monaco) | Monaco | ||||||||||
| AED-Partner International B.V. | Netherlands | ||||||||||
| APi Group Dutch Holdco B.V. | Netherlands | ||||||||||
| Blusgroep B.V. | Netherlands | ||||||||||
| Brandbeveiliging Alkmaar B.V. | Netherlands | ||||||||||
| De Vries Preventie B.V. | Netherlands | ||||||||||
| De Vries Branbeveiliging B.V. | Netherlands | ||||||||||
| Fire Safety First B.V. | Netherlands | ||||||||||
| FoamXpert B.V. | Netherlands | ||||||||||
| Hugen Branbeveiliging en Adviesbureau B.V. | Netherlands | ||||||||||
| RHDJ B.V. | Netherlands | ||||||||||
| Saval B.V. | Netherlands | ||||||||||
| Simplus Brandblusapparaten B.V. | Netherlands | ||||||||||
| SK FireSafety Group B.V. | Netherlands | ||||||||||
| SK Noord B.V. | Netherlands | ||||||||||
| STAK AED-Partner International | Netherlands | ||||||||||
| Vivon Nederland B.V. | Netherlands | ||||||||||
| Chubb International (Netherlands) BV | Netherlands | ||||||||||
| Chubb Nederland B.V. | Netherlands | ||||||||||
| Chubb Fire & Security B.V | Netherlands | ||||||||||
| Security Monitoring Centre B.V. | Netherlands | ||||||||||
| Chubb New Zealand | New Zealand | ||||||||||
| Noha Norway AS | Norway | ||||||||||
| Chubb Singapore Pte. Ltd. | Singapore | ||||||||||
| Chubb Iberia | Spain | ||||||||||
| Noha AB | Sweden | ||||||||||
| Noha Sweden AB | Sweden | ||||||||||
| Chubb Sicli SA | Switzerland | ||||||||||
| Chubb (Thailand) Ltd | Thailand | ||||||||||
| Guardair Aviation Security Technology Limited | Thailand | ||||||||||
| Chubb Integrated Security Systems LLC | UAE | ||||||||||
| APi Group UK HoldCo Limited | UK | ||||||||||
| Knowsley SK Holding Ltd. | UK | ||||||||||
| Knowsley SK Ltd. | UK | ||||||||||
| Vipond Fire Protection Limited | UK | ||||||||||
| Chubb Ltd. | UK | ||||||||||
| Dunford Hepburn Ltd. | UK | ||||||||||
| Chubb Group Ltd. | UK | ||||||||||
| Chubb Fire Ltd. | UK | ||||||||||
| Chubb Group Security Ltd. | UK | ||||||||||
| Chubb (NI) Ltd. | UK | ||||||||||
| Chubb Fire & Security Ltd | UK | ||||||||||
| Security Monitoring Centres Ltd. | UK | ||||||||||
| Frontline Security Solutions Ltd. | UK | ||||||||||
| Mentor Business Systems Ltd. | UK | ||||||||||
| BET Security and Communications Ltd. | UK | ||||||||||
| Chubb Systems Ltd. | UK | ||||||||||
| Chubb Dormant (No. 2) Limited. | UK | ||||||||||
| Chubb Group Properties Ltd. | UK | ||||||||||
| Pilgrim House Group Limited | UK | ||||||||||
| Chubb Group (International) Ltd. | UK | ||||||||||
| Chubb International Holdings Ltd. | UK | ||||||||||
| Chubb Security (Pensions) Ltd. | UK | ||||||||||
| Architekton Partners LLC | Delaware | ||||||||||
| SRI Fire Sprinkler, LLC | New York | ||||||||||