It is not only on this branch, it is generally a common trend. We trustly systematically not one branch on the sabzham, after 2 pages on the third there is such a cry, in almost all manufactured devices.
My purely personal opinion on this subject: in view of the trend on the increase in volume, high-speed characteristics and reduction of GB / price increasingly, production is transferred to China and other developing countries. Production is mechanized, but a weak link in a setting staple making the prevention of equipment, minor violations of standards in order to accelerate the technical process, the human factor. As a result, we have what we have. There is only an option to purchase flash drives in stores with clear return rules within the warranty periods, which does not remove the troubles completely, but at least gives some kind of maneuver.