EXHIBIT 21.1 SUBSIDIARIES OF THE COMPANY General Chemical Corporation.....................................................................................Delaware Toledo Technologies Inc....................................................................................Delaware 1279597 Ontario Inc.........................................................................................Ontario Sandco Automotive Ltd.......................................................................................Ontario Printing Developments Inc..................................................................................Delaware Balcrank Products Inc......................................................................................Delaware General Chemical Performance Products Ltd...................................................................Ontario HN Investment Holdings Inc.................................................................................Delaware Waterside Urban Renewal Corporation......................................................................New Jersey HMC Patents Holding Company Inc............................................................................Delaware Reheis, Inc................................................................................................Delaware Reheis International Inc.............................................................................Delaware Reheis Overseas..................................................................................Ireland Reheis Commercial.........................................................................Cayman Islands Reheis Holdings Inc..................................................................................Delaware Ilminster Company................................................................................Ireland Reheis Ireland..............................................................................Ireland PPI Holdings, Inc........................................................................................California Defiance, Inc..............................................................................................Delaware Defiance Precision Products, Inc.........................................................................Ohio Hy-Form Products, Inc................................................................................Michigan Defiance Testing and Engineering Services, Inc.......................................................Michigan Defiance Kinematics, Inc........................................................................Delaware Binderline Draftline, Inc.......................................................................Michigan Noma Corporation...........................................................................................Delaware PCT Mexico Corporation...............................................................................Delaware Noma O.P. Inc........................................................................................Delaware Electronic Interconnect Systems Inc.............................................................Massachusetts Noma Company................................................................................................Ontario Sistemas y Conexiones Integradas SA de CV..............................................................Mexico Krone Holding LLC..........................................................................................Delaware Krone Holding GmbH....................................................................................Germany Krone AG.........................................................................................Germany ELKOPlus Kommunikationstechnik Projectierung und Vertrieb GmbH..............................Germany Krone Informationsysteme GmbH...............................................................Germany Meissener Nachrichtentechnik GmbH...........................................................Germany Krone S.a.r.l................................................................................France Krone Hellas Commercial Societe Anonyme of Telecommunications Equipment......................Greece Krone (U.K.) Technique Ltd...........................................................United Kingdom Krone Communicaciones S.A...............................................................Spain Krone Italy S.r.l.............................................................................Italy Krone AS.....................................................................................Norway Krone Ges.m.b.H.............................................................................Austria Krone Communications Ltd............................................................Hong Kong Krone Kominikasyon Sanayi ve Ticaret Anonim Sirkeli..........................................Turkey Krone (Africa) (Proprietary) Limited...................................................South Africa Krone Telecommunicoes Industria e Comecio....................................................Brazil Krone Telecommunicoes Ltda...................................................................Brazil Krone Chile Limitada..........................................................................Chile Krone Telecommunicaciones S.A.......................................................Argentina Krone Communicaciones S.A. de C.V............................................................Mexico Krone USA Incorporated...................................................................New Jersey Krone Inc., USA....................................................................New Jersey PT Krone Indonesia........................................................................Indonesia Krone (Australia) Technique Pty. Limited..................................................Australia Krone Manufacturing Services Pty. Limited...........................................Australia Krone (NZ) Technique Ltd..........................................................New Zealand Krone Japan K.K.........................................................................Japan Krone Far East Pte. Ltd...................................................................Singapore Krone Communications Ltd......................................................................India ZAO Krone Russland...........................................................................Russia KRONE Communications (Shanghai) Company, Ltd..................................................China