Main products: After mechanical reamed anchor bolt, anchor bolt, self undercut machine reamer.

主营产品：后扩底机械锚栓、自切底机械锚栓、扩孔钻头。

youdao

Main products: After mechanical reamed anchor bolt, anchor bolt, self undercut machine reamer.

主营产品：后扩底机械锚栓、自切底机械锚栓、扩孔钻头。

youdao