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方根螺栓 JM-GB12
盖型螺母
GB-T889-1-2000-10级锁紧螺母
 
   
K2折头螺栓(套)
K2折头螺栓
K4折头螺栓
 
     
铁路机车专用方根螺栓
铁路机车专用高强度螺栓
   
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Haicheng Industrial Zone.Longwan Area.Wenzhou City.  TEL:0577-85225676 Fax:0577-85228582