Exhibit 21 TREDEGAR CORPORATION Virginia Jurisdiction Name of Subsidiary of Incorporation ADMA srl Italy AUS Corporation Virginia Bon L Aluminum LLC Virginia Bon L Campo Limited Partnership Texas Bon L Canada Inc. Canada Bon L Holdings Corporation Virginia The William L. Bonnell Company, Inc. Georgia Bon L Manufacturing Company Pennsylvania Goodlands Holding S.A. Italy Guangzhou Tredegar Films Company Limited China Idlewood Properties, Inc. Virginia Molecumetics Institute, Ltd. Virginia Molecumetics, Ltd. Virginia PROMEA Engineering srl Italy TFP Netherlands C.V. Netherlands TGI Fund I, LC Virginia TGI Fund II, LC Virginia TGI Fund III, LLC Virginia TGI Fund IV, LLC Virginia Therics, Inc. Virginia Tredegar Brazil Industria De Plasticos Ltda. Brazil Tredegar Development Corporation Virginia Tredegar Exploration, Inc. Virginia Tredegar Far East Corporation Virginia Tredegar Film Products Argentina S.A. Argentina Tredegar Film Products, B.V. Netherlands Tredegar Film Products Co. Shanghai, Ltd. China Tredegar Film Products Corporation Virginia Tredegar Film Products Italia S.r.l. Italy Tredegar Film Products (Japan) Ltd. Virginia Tredegar Film Products Kft Hungary Tredegar Film Products (Latin America), Inc. Virginia Tredegar Film Products - Lake Zurich, Inc. Virginia Tredegar Film Products - Pottsville, Inc. Virginia Tredegar Film Products (U.S.) LLC Virginia Tredegar Films Development, Inc. Virginia Tredegar Foreign Sales Corporation U.S. Virgin Islands Tredegar Reserves, Inc. Virginia Tredegar Investments, Inc. Virginia