Exhibit 21 TREDEGAR INDUSTRIES, INC. Virginia Jurisdiction Name of Subsidiary of Incorporation APPX Software, Inc. Virginia The William L. Bonnell Company, Inc. Georgia Capitol Products Corporation Pennsylvania Fiberlux, Inc. Virginia Idlewood Properties, Inc. Virginia Molecumetics Institute, Ltd. Virginia Molecumetics, Ltd. Virginia Tredegar Brazil Industria Brazil De Plasticos Ltda. Tredegar Development Corporation Virginia Tredegar Exploration, Inc. Virginia Tredegar Film Products Argentina S.A. Argentina Tredegar Film Products, B.V. Netherlands Tredegar Foreign Sales Corporation U.S. Virgin Islands Tredegar Investments, Inc. Virginia Tredegar Reserves, Inc. Virginia Virginia Techport, Inc. Virginia