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| butterfly valve |
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| The Bi-direction butterfly valve gets the letters patent from China government (Patent number: 022514236). Tiansheng brand metal seat butterfly valve get award of the excellent products 2002 from China Pump and Valve Industrial Association, the famous band products 2003 from Pump and Valve Association, the famous brand 2004 from Wenzhou Administration for Industry & Commerce. |
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| 2014/4/12 |
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