National order number：
15632869719
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sleeve
黔东南 Straight thread sleeve
黔东南Variable diameter sleeve
Fourth grade steel sleeve
rebar coupler
黔东南Cold extrusion sleeve
黔东南grout sleeve
黔东南Half grouted sleeve
Fully grouted sleeve
黔东南Threaded steel sleeve
黔东南Self-locking sleeve
Split type sleeve
黔东南Upsetting sleeve
equipment
accessory
National order number：15632869719 
National order number：15632869719 
