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                    Certificate Number: FM 681692
                    
                        Scope: The manufacture of ductile manhole covers, gratings and butterfly valves. 
球墨铸铁人孔井盖、篦子、蝶阀的生产。
                
| Original Registration Date | Effective Date | Last Revision Date | Expiry Date | 
|---|---|---|---|
| 2017-11-14 | 2023-11-14 | 2023-09-20 | 2026-11-13 |