Exhibit 21 TREDEGAR INDUSTRIES, INC. Virginia Jurisdiction Name of Subsidiary of Incorporation APPX Software, Inc. Virginia The William L. Bonnell Company, Inc. Georgia Brudi, Inc. Oregon Brudi Limited United Kingdom Capitol Products Corporation Pennsylvania Fiberlux, Inc. Virginia Idlewood Properties, Inc. Virginia Massie Tool, Mold & Die, Inc. Florida Molecumetics Institute, Ltd. Virginia Molecumetics, Ltd. Virginia Polestar Plastics Manufacturing Company Virginia Swing-Shift Brudi Pacific Pty Ltd Queensland Australia Tredegar Brasil Industria de Plasticos Ltda. Brazil Tredegar Development Corporation Virginia Tredegar Exploration, Inc. Virginia Tredegar Film Products, B.V. Netherlands Tredegar Foreign Sales Corporation U.S. Virgin Islands Tredegar Investments, Inc. Virginia Tredegar Molded Products Company Virginia Virginia Techport, Inc. Virginia