Exhibit 21 TREDEGAR CORPORATION Virginia Jurisdiction Name of Subsidiary of Incorporation BLC G.P., Inc. Virginia Bon L Campo Limited Partnership Texas Bon L Canada Inc. Canada The William L. Bonnell Company, Inc. Georgia Capitol Products Corporation Pennsylvania Fiberlux, Inc. Virginia Guangzhou Tredegar Films Company Limited China Idlewood Properties, Inc. Virginia Molecumetics Institute, Ltd. Virginia Molecumetics, Ltd. Virginia 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 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 Film Products (Japan) Ltd. Virginia Tredegar Film Products Kft Hungary Tredegar Film Products - Lake Zurich, Inc. Virginia Tredegar Film Products - Pottsville, Inc. Virginia Tredegar Films Development, Inc. Virginia Tredegar Foreign Sales Corporation U.S. Virgin Islands Tredegar Holdings Corporation Virginia Tredegar Reserves, Inc. Virginia Tredegar Investments, Inc. Virginia Virginia Techport, Inc. Virginia WLB L.P., Inc. Virginia