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EXHIBIT 21.0
 
   Place ofName
    
    IncorporationA. GENERAL CORPORATE ADMINISTRATIONCBE Services, Inc.
    
    Delaware, U.S.CI Finance, Inc.
    
    Delaware, U.S.Cooper (China) Co., Ltd.
    
    ChinaCooper Bermuda Investments Ltd.
    
    BermudaCooper Bussmann Finance, Inc.
    
    Delaware, U.S.Cooper Electronic Technologies (Shanghai) Co., Ltd.
    
    ChinaCooper Finance (Bermuda) Ltd.
    
    BermudaCooper Finance (Canada) L.P.
    
    AlbertaCooper Finance Group, Ltd.
    
    BermudaCooper Finance Group, S a.r.l.
    
    LuxembourgCooper Finance USA, Inc.
    
    Delaware, U.S.Cooper Global LLC
    
    Delaware, U.S.Cooper Holdings Ltd.
    
    BermudaCooper Hungary Group Financing Limited Liability Company
    
    HungaryCooper India Private Limited
    
    IndiaCooper Industries Finanzierungs-GbR
    
    GermanyCooper Industries Foundation
    
    Ohio, U.S.Cooper Industries FZE
    
    Sharjah, UAECooper Industries International, LLC
    
    Delaware, U.S.Cooper Industries Mexico, S. de R.L. de C.V.
    
    MexicoCooper Industries, Inc.
    
    Delaware, U.S.Cooper International Finance, Inc.
    
    Delaware, U.S.Cooper Investment Group. S a.r.l.
    
    LuxembourgCooper Investment Group, Ltd.
    
    BermudaCooper Luxembourg Finance S à.r.l.
    
    LuxembourgCooper Offshore Holdings Ltd.
    
    BermudaCooper Pensions Limited
    
    United KingdomCooper Power Systems Finance, Inc.
    
    Delaware, U.S.Cooper Power Tools Finance, Inc.
    
    Delaware, U.S.Cooper Securities, Inc.
    
    Texas, U.S.Cooper Thailand, LLC
    
    Delaware, USCooper US, Inc.
    
    Delaware, U.S
 1




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Place ofName
    
    IncorporationB. ELECTRICAL PRODUCTSAlpha Lighting, Inc.
    
    Delaware, U.S.Arrow-Hart, S.A. de C.V.
    
    MexicoBroomco (1644) Limited
    
    United KingdomBussmann do Brasil Ltda.
    
    BrazilBussmann International, Inc.
    
    Delaware, U.S.Bussmann, S. de R.L. de C.V.
    
    MexicoBZ Holdings Inc.
    
    Delaware, U.S.Cannon Technologies, Inc.
    
    MinnesotaCapri Codec S.A.S.
    
    FranceCEAG Notlichtsysteme GmbH
    
    GermanyComponentes de Iluminacion, S. de R.L. de C.V.
    
    MexicoCooper (UK) Group Limited
    
    United KingdomCooper B-Line Limited
    
    United KingdomCooper B-Line, Inc.
    
    Delaware, U.S.Cooper Business Enterprise (Shanghai) Co., Ltd.
    
    ChinaCooper Bussmann, (U.K.) Limited
    
    United KingdomCooper Bussmann India Private Limited
    
    IndiaCooper Bussmann, Inc.
    
    Delaware, U.S.Cooper Controls (U.K.) Limited
    
    United KingdomCooper Controls Limited
    
    United KingdomCooper Crouse-Hinds (UK) Ltd.
    
    United KingdomCooper Crouse-Hinds AS
    
    NorwayCooper Crouse-Hinds B.V.
    
    NetherlandsCooper Crouse-Hinds GmbH
    
    GermanyCooper Crouse-Hinds (LLC) (49% owned byCooper Industries International, LLC)
    
    Dubai, U.A.E.Cooper Crouse-Hinds Pte. Ltd.
    
    SingaporeCooper Crouse-Hinds Korea Ltd.
    
    KoreaCooper Crouse-Hinds, LLC
    
    Delaware, U.S.Cooper Crouse-Hinds, S.A.
    
    SpainCooper Crouse-Hinds, S.A. de C.V.
    
    MexicoCooper Csa Srl
    
    ItalyCooper Electric (Shanghai) Co., Ltd.
    
    ChinaCooper Electrical Australia Pty. Limited
    
    AustraliaCooper Electrical International, Inc.
    
    Delaware, U.S.Cooper Enterprises LLC
    
    Delaware, U.S.Cooper Industries (Electrical) Inc.
    
    Ontario, CanadaCooper Industries (U.K.) Limited
    
    United KingdomCooper Industries Holdings GmbH
    
    GermanyCooper Industries Middle East, LLC
    
    Delaware, U.S.Cooper Industries Poland, LLC
    
    PolandCooper Industries Russia LLC
    
    RussiaCooper Industries South Africa, LLC
    
    DelawareCooper Industries Vietnam, LLC
    
    DelawareCooper Lighting and Security Limited
    
    United KingdomCooper Lighting de Mexico, S. de R.L. de C.V.
    
    MexicoCooper Lighting, Inc.
    
    Delaware, U.S.
 2




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Place ofName
    
    IncorporationB. ELECTRICAL PRODUCTS (contd)Cooper Menvier B.V.
    
    NetherlandsCooper Menvier France SARL
    
    FranceCooper Menvier S.A.S.
    
    FranceCooper Mexico Distribucion, S. de R.L. de C.V.
    
    MexicoCooper Nature (Ningbo) Electric Co., Ltd.
(60% owned by Cooper (China) Co. Ltd.))
    
    China, Peoples RepublicCooper Pretronica Lda.
    
    PortugalCooper Power Systems do Brasil Ltda.
    
    BrazilCooper Power Systems Transportation Company
    
    Wisconsin, U.S.Cooper Power Systems, Inc.
    
    Delaware, U.S.Cooper Security Limited
    
    United KingdomCooper Shanghai Power Capacitor, Co. Ltd. (65% owned
by Cooper (China) Co., Ltd.)
    
    ChinaCooper Technologies Company
    
    Delaware, U.S.Cooper Wheelock, Inc.
    
    New JerseyCooper Wiring Devices de Mexico, S.A. de C.V.
    
    MexicoCooper Wiring Devices Manufacturing, S. de R.L. de C.V.
    
    MexicoCooper Wiring Devices, Inc.
    
    New York, U.S.Cooper Xian Fusegear Ltd.
    
    ChinaCrompton Lighting Holdings Limited
    
    United KingdomCrompton Lighting International Limited
    
    United KingdomCrompton Lighting Investments Limited
    
    United KingdomCTIP Inc.
    
    Delaware, U.S.Digital Lighting Co., Limited (98% owned by Digital
Lighting Holdings Limited and 2% owned by Alpha
Lighting, Inc.)
    
    Hong KongDigital Lighting Holdings Limited (50% owned by
Alpha Lighting, Inc.)
    
    British Virgin IslandsDongguan Cooper Electronics Co. Ltd.
    
    ChinaElectromanufacturas, S.A. de C.V.
    
    MexicoFulleon Limited
    
    United KingdomG&H Technology, Inc.
    
    DelawareGS Metals Corp.
    
    DelawareIluminacion Cooper de las Californias S. de R.L. de C.V.
    
    MexicoIndustrias Royer, S.A. de C.V.
    
    MexicoMcGraw-Edison Development Corporation
    
    Delaware, U.S.MadahCom, Inc.
    
    DelawareMEDC Limited
    
    United KingdomMenvier Group Limited
    
    United KingdomMenvier Overseas Holdings Limited
    
    United KingdomOmnex Control Systems, ULC
    
    Alberta, CanadaPCV Incorporated
    
    Delaware, U.S.PDS Edison Power Systems Co., Ltd.
    
    ChinaRL Manufacturing Sdn. Bhd.
    
    MalaysiaRLS Incorporated
    
    Delaware, U.S.Roam Secure, Inc.
    
    DelawareRTE Far East Corporation
    
    TaiwanSave Fusetech Inc.
    
    KoreaScantronic Benelux B.V.
    
    Netherlands
 3




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Place ofName
    
    IncorporationB. ELECTRICAL PRODUCTS (contd)Scantronic Holdings Limited
    
    United KingdomScantronic International Limited
    
    United KingdomSilver Light International Limited
    
    British Virgin IslandsSilver Victory Hong Kong Limited
    
    Hong KongSirius Industries, Inc.
    
    DelawareSure Power, Inc.
    
    OregonThomas A. Edison Research & Development Center
(Shanghai) Co., Ltd.
    
    ChinaUnivel EPE
    
    GreeceWPI-Boston Division, Inc.
    
    MassachusettsViking Electronics, Inc.
    
    Delaware
 4




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Place ofName
    
    IncorporationC. TOOLS & HARDWAREAiretool and Yost Superior Realty, Inc.
(50% owned by Cooper Power Tools, Inc.)
    
    Ohio, U.S.Collins Associates Ltd.
    
    British Virgin IslandsCooper (Great Britain) Ltd.
    
    United KingdomCooper Brands, Inc.
    
    Delaware, U.S.Cooper Industries (Canada) Company
    
    Nova Scotia, CanadaCooper Industries (Canada) Inc.
    
    Ontario CanadaCooper Industries Australia Pty Limited
    
    AustraliaCooper Industries France SARL
    
    FranceCooper Industries GmbH
    
    GermanyCooper Industries, LLC
    
    Delaware, U.S.Cooper Italia S.r.l.
    
    ItalyCooper Power Tools GmbH & Co. OHG
    
    GermanyCooper Power Tools GmbH Beteiligungen
    
    GermanyCooper Power Tools, S.A.S.
    
    FranceCooper Tools B.V.
    
    NetherlandsCooper Tools de Mexico, S. de R.L. de C.V.
    
    MexicoCooper Tools GmbH
    
    GermanyCooper Tools Hungaria Kft.
    
    HungaryCooper Tools Industrial Ltda.
    
    BrazilCooper Tools International, LLC
    
    Delaware, U.S.Cooper Tools Manufacturing, S. de R.L. de C.V.
    
    MexicoCooper Tools Pty. Limited
    
    AustraliaCooper Tools S.A.S.
    
    FranceCooper Tools, Inc.
    
    Delaware, U.S.Deutsche Gardner-Denver Beteiligungs-GmbH
    
    GermanyEmpresa Andina de Herramientas, S.A.
    
    ColombiaErem S.A.
    
    SwitzerlandLufkin Europa B.V.
    
    NetherlandsMetronix Messgerate und Elektronik GmbH
    
    GermanySociete Civile Immobiliere PRECA
    
    FranceSociete Civile Immobiliere R.M.
    
    FranceThe Cooper Group, Inc.
    
    Delaware, U.S.
 5




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Place ofName
    
    IncorporationD. INACTIVE SUBSIDIARIESB & S Fuses Limited
    
    United KingdomBlessing International B.V.
    
    NetherlandsBrownly-Consultadoria e Projectos Lda
    
    Madeira Free ZoneClarity Lighting Limited
    
    United KingdomCooper Industries Finance B.V.
    
    NetherlandsCooper Industries Foreign Sales Company, Limited
    
    BarbadosCooper Power Tools B.V.
    
    NetherlandsCortek Internacional, S.A.
    
    Costa RicaCrouse-Hinds de Venezuela, C.A.
    
    VenezuelaDFL Fusegear Limited
    
    United KingdomDimmers Direct Limited
    
    United KingdomDynalite International Limited
    
    United KingdomDynalite Limited
    
    United KingdomEagle Electric MFG. Co. Mexico, S.A. de C.V.
    
    MexicoFirecom Limited
    
    United KingdomFittings Images Technology Limited
    
    United KingdomFotadvise (M.E.W.) Limited
    
    United KingdomGardner-Denver (Aust.) Pty. Limited
    
    AustraliaGardner-Denver International, C.A.
    
    VenezuelaHi-Tech Enclosures Limited
    
    United KingdomHomelink Telecom Limited
    
    United KingdomiControl Limited
    
    United KingdomiLight Group Limited
    
    United KingdomiLight Limited
    
    United KingdomIntelligent Lighting, Ltd.
    
    United KingdomJSB Electrical Limited
    
    United KingdomKestron Units Limited
    
    United KingdomLED Storm Limited
    
    United KingdomLight Processor Limited
    
    United KingdomLight Sound Image Systems Limited
    
    United KingdomLightfactor Contracts Limited
    
    United KingdomLightfactor Sales Limited
    
    United KingdomLightomation Limited
    
    United KingdomManufacturing Electrical Design Consultants Limited
    
    United KingdomMarata Group Limited
    
    United KingdomMenvier Limited
    
    United KingdomMenvier Security Limited
    
    United KingdomMercury Switch Manufacturing Company Limited
    
    United KingdomMSG Leasing Limited
    
    United KingdomNelco Systems Limited
    
    United KingdomNext Loudspeakers Limited
    
    United KingdomNext Two (International) Limited
    
    United KingdomNext Two Limited
    
    United KingdomPolaron Communications Limited
    
    United KingdomPolaron Components Limited
    
    United KingdomPolaron Controls Limited
    
    United KingdomPolaron Cortina Limited
    
    United KingdomPolaron Engineering Limited
    
    United Kingdom
 6




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Place ofName
    
    IncorporationD. INACTIVE SUBSIDIARIES (Cont.)Polaron Entropics Limited
    
    United KingdomPolaron Manufacturing Limited
    
    United KingdomPolaron Schaevitz Limited
    
    United KingdomRegalsafe Limited
    
    United KingdomRegent Far East Limited
    
    Hong KongRossula Limited
    
    United KingdomScantronic Limited
    
    United KingdomSi-Tronic Srl (49% owned by Scantronic International
Limited)
    
    ItalyTransmould Limited
    
    IrelandZeck Audio U.K. Limited
    
    United KingdomZero 88 Lighting Limited
    
    United Kingdom
 7