Invalid USB flash drive trademark.

Invalid trademark of U disk will cause huge losses. U disk is not a product name, but a trademark of flash disk registered by Netac Technology, which invented the world's first flash disk and obtained the global basic invention patent of flash disk. U disk, the trademark of USB flash drive, is considered to be the only original invention patent achievement of China people in the field of computer storage in the past 20 years. It is the core advantage of Netac's wealth, the basis of patent operation and the main source of achievements. After the patent license expires, Netac may directly lose tens of millions, which is not a small sum.