EXHIBIT 21

SUBSIDIARIES OF OWENS-ILLINOIS GROUP, INC.

Owens-Illinois
Group, Inc. had the following subsidiaries at December 31, 2003 (subsidiaries are indented following their respective parent companies):

|Name                         |                                           | State/Country of Incorporation
or Organization      
|---------------------------- | ----------------------------------------- | ----------------------------------------------------
|OI Health Care Holding Corp  |                                           | Delaware                                            
|OI General Finance Inc.      |                                           | Delaware                                            
|OI Plastic Products FTS Inc. |                                           | Delaware                                            
|                             | Specialty Packaging Licensing Company     |                                                     
|                             | Owens-Illinois Closure Inc.               |                                                     
|                             |                                           | Product Design & Engineering, Inc.                  
|                             |                                           | OI Brazil Closure Inc.                              
|                             |                                           | Specialty Packaging Products de Mexico, S.A. de C.V.
|                             | Owens-Illinois Prescription Products Inc. |                                                     
|                             |                                           | OI Medical Inc.                                     
|                             | Owens-Brockway Plastic Products Inc.      |                                                     
|                             |                                           | Owens-Illinois Specialty Products Puerto Rico, Inc. 
|                             |                                           | OI Regioplast STS Inc.                              
|                             |                                           | OI Australia Inc.                                   
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|                             | OI Venezuela Plastic Products Inc.        |                                                     
|                             |                                           | OI Plasticos de Venezuela C.A.                      
|OI General FTS Inc.          |                                           | Delaware                                            
|                             | OI Castalia STS Inc.                      |                                                     
|                             | OI Levis Park STS Inc.                    |                                                     
|                             | OI AID STS Inc.                           |                                                     
|                             | Owens-Illinois General Inc.               |                                                     
|                             |                                           | Owens Insurance, Ltd.                               
|                             |                                           | OI Holding Company, Inc.                            
|                             |                                           | Universal Materials, Inc.                           
|                             |                                           | OI Advisors, Inc.                                   
|                             |                                           |                                                     
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|                             |                                           | Maumee Air Associates Inc.                          
|                             | Owens-Brockway Packaging, Inc.            |                                                     
|                             |                                           | Owens-Brockway Glass Container Inc.                 
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E-1

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| |  |  | OI California Containers Inc.  |                                                 | Delaware                                      
| |  |  | ------------------------------ | ----------------------------------------------- | ----------------------------------------------
| |  |  | OI Puerto Rico STS Inc.        |                                                 | Delaware                                      
| |  |  | OI Europe & Asia Inc.          |                                                 | Delaware                                      
| |  |  | OI Ecuador STS Inc.            |                                                 | Delaware                                      
| |  |  |                                | Cristaleria del Ecuador, S. A.                  |                                               
| |  |  | OI Peru STS Inc.               |                                                 | Delaware                                      
| |  |  |                                | Owens-Illinois Peru S. A.                       |                                               
| |  |  |                                |                                                 | Compania Manufactura De Vidrio Del Peru       
| |  |  | OI Poland Inc.                 |                                                 | Delaware                                      
| |  |  |                                | Owens-Illinois Polska S. A.                     |                                               
| |  |  | OI Hungary Inc.                |                                                 | Delaware                                      
| |  |  |                                | United Hungarian Glass Containers Kft.          |                                               
| |  |  | OI Thailand Inc.               |                                                 | Delaware                                      
| |  |  |                                | OI Pacific (Machinery and Distribution) Limited |                                               
| |  |  | OI International Holdings Inc. |                                                 | Delaware                                      
| |  |  |                                | OI Global C.V.                                  |                                               
| |  |  |                                |                                                 | Owens-Illinois (Australia) Pty. Ltd.          
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| |  |  |                                | OI European Group B.V.                          |                                               
| |  |  |                                |                                                 | OI Europe (Machinery and Distribution) Limited
| |  |  |                                |                                                 | Closure & Packaging Services, Ltd.            
| |  |  |                                |                                                 |                                               
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| |  |  |                                |                                                 | UGG Holdings Ltd.                             
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E-2

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| |  |  |  |  |                                    |                                                                     |                                        | United Glass, Limited        |                         | United Kingdom
| |  |  |  |  | ---------------------------------- | ------------------------------------------------------------------- | -------------------------------------- | ---------------------------- | ----------------------- | --------------
| |  |  |  |  | OI Glass Holdings B. V.            |                                                                     | Netherlands                           
| |  |  |  |  |                                    | Owens-Illinois International Management & Trading Kft.              |                                        | Hungary                     
| |  |  |  |  |                                    | OI Italia S.r.l.                                                    |                                        | Italy                       
| |  |  |  |  |                                    |                                                                     | AVIR S.p.A.                            |                              | Italy                  
| |  |  |  |  |                                    |                                                                     |                                        | Avirunion, a.s.              |                         | Czech Republic
| |  |  |  |  |                                    |                                                                     |                                        | Sonator Investments B.V.     |                         | Netherlands   
| |  |  |  |  |                                    |                                                                     |                                        |                              | Vidrieria Rovira, S. A. |               
| |  |  |  |  |                                    |                                                                     |                                        | Vetrerie Medid.              |                         | Italy         
| |  |  |  |  |                                    |                                                                     |                                        | San Domenico Vetraria S.r.l. |                         | Italy         
| |  |  |  |  |                                    |                                                                     |                                        | Nord Vetri S.p.A.            |                         | Italy         
| |  |  |  |  |                                    |                                                                     |                                        | Sicilvetro S.p.A.            |                         | Italy         
| |  |  |  |  | Owens-Illinois International B. V. |                                                                     | Netherlands                           
| |  |  |  |  |                                    | Owens-Illinois Plastics Limited                                     |                                        | United Kingdom              
| |  |  |  |  |                                    | OI Canada Holdings B.V.                                             |                                        | Netherlands                 
| |  |  |  |  |                                    |                                                                     | O-I Canada Corp.                       |                              | Canada                 
| |  |  |  |  |                                    | Owens-Illinois de Venezuela, C. A.                                  |                                        | Venezuela                   
| |  |  |  |  |                                    |                                                                     | Fabrica de Vidrio Los Andes, C. A.     |                              | Venezuela              
| |  |  |  |  |                                    | Cristaleria Peldar, S.A.                                            |                                        | Colombia                    
| |  |  |  |  |                                    |                                                                     | Cristar S.A.                           |                              | Colombia               
| |  |  |  |  |                                    |                                                                     |                                        | Vidrieria Fenicia            |                         | Colombia      
| |  |  |  |  |                                    |                                                                     | Industria de Materias Primas Limitiada |                              | Colombia               
| |  |  |  |  |                                    | Centro de Mecanizados del Causa SA                                  |                                        | Columbia                    
| |  |  |  |  |                                    | Sao Raimundo Administracao, Participacoese Representacoes, Limitada |                                        | Brazil                      
| |  |  |  |  |                                    |                                                                     | Companhia Industrial Sao Paulo e Rio   |                              | Brazil                 
| |  |  |  |  |                                    | OI Plasticos De Ecuador                                             |                                        | Ecuador                     
| |  |  |  |  |                                    | OI Finnish Holdings Oy                                              |                                        | Finland                     
| |  |  |  |  |                                    |                                                                     | Owens-Illinois Plastics Oy             |                              | Finland                
| |  |  |  |  |                                    |                                                                     | Karhulan Lasi Oy                       |                              | Finland                
| |  |  |  |  |                                    |                                                                     | A/S Jarvakandi Klaas                   |                              | Estonia                
| |  |  |  |  |                                    | PET Technologies B. V.                                              |                                        | Netherlands                 

E-3

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