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http://www.0577v.net/  球閥                                                              
http://www.0577v.net/prod.asp?cid1=46  法蘭球閥                                          
http://www.0577v.net/prod.asp?cid1=47  氣動蝶閥                                          
http://www.0577v.net/prod.asp?cid1=52  法蘭閘閥                                          
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http://www.gyfmw.com/content/?284.html  J41H法蘭高壓截止閥
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http://www.8kty.com/  蝶閥生產廠家                                                      
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http://www.yjfmw.com/list/?135_1.html 刀型閘閥廠家

http://www.yjzzfm.net/ 通風碟閥  
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http://www.yjzzfm.net/list/?7_1.html  插板閥
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