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                    Certificate Number: EMS 504449
                    
                        Scope: The design and manufacture of ceramics honeycomb products for automobile. 
汽车用蜂窝陶瓷产品的设计和生产。
                
| Original Registration Date | Effective Date | Last Revision Date | Expiry Date | 
|---|---|---|---|
| 2006-06-14 | 2024-01-12 | 2023-11-01 | 2027-01-11 |