National order number：15632869719 
National order number：15632869719 
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PRODUCT CENTERWhatsAPP：+8618931805783
Email：andagroup95@gmail.com
mobile phone：+8615632869719
address：Hengshui Industrial Park, Hebei Province
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Variable diameter steel bar straight threaded sleeve is used to connect steel bars of different diameters, such as build...
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