In the bulk purchase of aluminum tube, the customer is not possible to check every piece of which carefully, so often after the event will find inferior aluminum tube, not only to the customer caused losses, but also make our aluminum tube manufacturer's reputation damaged. How to identify and deal

In the bulk purchase of aluminum tube, the customer is not possible to check every piece of which carefully, so often after the event will find inferior aluminum tube, not only to the customer caused losses, but also make our aluminum tube manufacturer's reputation damaged. How to identify and deal