Exhibit 21
[X] W. R. GRACE & CO., A DELAWARE CORPORATION
U.S. SUBSIDIARIES
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12/31/2003
[X] Chapter 11 Filing - April 2, 2001
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STATE OF
SUBSIDIARY NAME INCORPORATION
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[X] A-1 Bit & Tool Co., Inc. DE
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* Advanced Refining Technologies LLC DE
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[X] Alewife Boston Ltd. MA
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[X] Alewife Land Corporation MA
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[X] Amicon, Inc. DE
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[ ] AP Chem Incorporated MD
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[X] CB Biomedical, Inc. DE
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[X] CCHP, Inc. DE
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[X] Coalgrace, Inc. DE
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[X] Coalgrace II, Inc. DE
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[ ] Construction Products Dubai, Inc. DE
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[X] Creative Food 'N Fun Company DE
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[X] Darex Puerto Rico, Inc. DE
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[X] Del Taco Restaurants, Inc. DE
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[X] Dewey and Almy, LLC DE
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[X] Ecarg, Inc. NJ
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[X] Five Alewife Boston Ltd. MA
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[X] G C Limited Partners I, Inc. DE
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[X] G C Management, Inc. DE
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[X] GEC Management Corporation DE
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[X] GN Holdings, Inc. DE
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[X] GPC Thomasville Corp. DE
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[X] Gloucester New Communities Company, Inc. NJ
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[X] Grace A-B Inc. DE
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[X] Grace A-B II Inc. DE
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[ ] Grace Asia Pacific, Inc. DE
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[ ] Grace Chemicals, Inc. DE
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[X] Grace Chemical Company of Cuba IL
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[ ] Grace Collections, Inc. DE
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[X] Grace Culinary Systems, Inc. MD
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[X] Grace Drilling Company DE
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[X] Grace Energy Corporation DE
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[X] Grace Environmental, Inc. DE
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* Ownership of Advanced Refining Technologies LLC is 55% W. R. Grace & Co.-Conn.
(#001) and 45% Chevron USA, Inc.; certain enumerated actions of the Executive
Committee require unanimous consent.
1
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STATE OF
SUBSIDIARY NAME INCORPORATION
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[X] Grace Europe, Inc. DE
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[ ] Grace Germany Holdings, Inc. DE
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[X] Grace H-G Inc. DE
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[X] Grace H-G II Inc. DE
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[X] Grace Hotel Services Corporation DE
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[X] Grace International Holdings, Inc. DE
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[ ] Grace Latin America, Inc. DE
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[ ] Grace Management Services, Inc. DE
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[X] Grace Offshore Company LA
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[X] Grace PAR Corporation DE
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[X] Grace Petroleum Libya Incorporated DE
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[ ] Grace Receivables Purchasing, Inc. DE
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[X] Grace Tarpon Investors, Inc. DE
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[X] Grace Ventures Corp. DE
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[X] Grace Washington, Inc. DE
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[X] W. R. Grace Capital Corporation NY
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[X] W. R. Grace & Co.-Conn. CT
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[X] W. R. Grace Land Corporation NY
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[X] Gracoal, Inc. DE
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[X] Gracoal II, Inc. DE
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[X] Guanica-Caribe Land Development Corporation DE
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[X] Hanover Square Corporation DE
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[X] Homco International, Inc. DE
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[ ] Ichiban Chemical Co., Inc. DE
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[X] Kootenai Development Company MT
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[X] L B Realty, Inc. DE
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[X] Litigation Management, Inc. DE
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[X] Monolith Enterprises, Incorporated DC
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[X] Monroe Street, Inc. DE
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[X] MRA Holdings Corp. DE
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[X] MRA Intermedco, Inc. DE
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[X] MRA Staffing Systems, Inc. DE
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[X] Remedium Group, Inc. DE
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[ ] Separations Group, The CA
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[X] Southern Oil, Resin & Fiberglass, Inc. FL
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[X] Water Street Corporation DE
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NON-U.S. SUBSIDIARIES
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COUNTRY/
SUBSIDIARY NAME
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ARGENTINA
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W. R. Grace Argentina S.A.
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WRG Argentina, S.A.
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AUSTRALIA
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Grace Australia Pty. Ltd.
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BELGIUM
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Grace N.V.
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Grace Silica N.V.
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BRAZIL
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Grace Brasil Ltda.
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Grace Davison Ltda.
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PEADCO-Engenharia, Comercio Industria Ltda.
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CANADA
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GEC Divestment Corporation Ltd.
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Grace Canada, Inc.
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W. R. Grace Finance (NRO) Ltd.
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CHILE
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Grace Quimica Compania Limitada
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CHINA - PEOPLE'S REPUBLIC OF
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Grace China Ltd.
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COLOMBIA
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Grace Colombia S.A.
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W. R. G. Colombia S.A.
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CUBA
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Envases Industriales y Comerciales, S.A.
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Papelera Camagueyana, S.A.
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FRANCE
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Etablissements Pieri S.A.
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Societe Civile Beau-Beton
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W. R. Grace S.A.
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GERMANY
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Advanced Refining Technologies GmbH
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Grace Bauprodukte GmbH
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Grace Darex GmbH
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Grace GP G.m.b.H.
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Grace Holding G.m.b.H.
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Grace Management GP G.m.b.H.
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Grace Silica GmbH
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COUNTRY/SUBSIDIARY NAME
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GREECE
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Grace Hellas E.P.E.
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HONG KONG
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W. R. Grace (Hong Kong) Limited
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W. R. Grace Southeast Asia Holdings Limited
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HUNGARY
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Grace Ertekesito Kft.
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INDIA
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W. R. Grace & Co. (India) Private Limited
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INDONESIA
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PT. Grace Specialty Chemicals Indonesia
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IRELAND
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Amicon Ireland Limited
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Grace Construction Products (Ireland) Limited
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Trans-Meridian Insurance (Dublin) Ltd.
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ITALY
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W. R. Grace Italiana S.p.A.
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JAPAN
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Advanced Refining Technologies K.K.
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Grace Chemicals K.K.
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Grace Japan Kabushiki Kaisha
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KOREA
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Grace Korea Inc.
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MALAYSIA
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W. R. Grace (Malaysia) Sendiran Berhad
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W. R. Grace Specialty Chemicals (Malaysia) Sdn. Bhd.
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MEXICO
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Grace Container, S. A. de C. V.
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W. R. Grace Holdings, S. A. de C. V.
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NETHERLANDS
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Amicon B.V.
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Denac Nederland B.V.
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Storm van Bentem en Kluyver B.V.
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W. R. Grace B.V.
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NETHERLANDS ANTILLES
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W. R. Grace N.V.
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NEW ZEALAND
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Grace (New Zealand) Limited
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PHILIPPINES
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W. R. Grace (Philippines), Inc.
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POLAND
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Grace Sp. z o.o.
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RUSSIA
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Darex CIS LLC
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SINGAPORE
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W. R. Grace (Singapore) Private Limited
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SOUTH AFRICA
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Grace Davison (Proprietary) Limited
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W. R. Grace Africa (Pty.) Limited
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COUNTRY/
SUBSIDIARY NAME
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SPAIN
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Grace, S.A.
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Pieri Especialidades, S.L.
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SWEDEN
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Grace AB
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Grace Catalyst AB
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Grace Sweden AB
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SWITZERLAND
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Pieri S.A.
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TAIWAN
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W. R. Grace Taiwan, Inc.
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THAILAND
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W. R. Grace (Thailand) Limited
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UNITED KINGDOM
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A.A. Consultancy & Cleaning Company Limited
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Cormix Limited
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Borndear 1 Limited
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Borndear 2 Limited
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Borndear 3 Limited
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Darex UK Limited
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Emerson & Cuming (Trading) Ltd.
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Emerson & Cuming (UK) Ltd.
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Grace Construction Products Limited
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Pieri U.K. Limited
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Servicised Ltd.
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W. R. Grace Limited
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VENEZUELA
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Grace Venezuela, S.A.
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Inversiones GSC, S.A.
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