1. brands of mid-to high-end computer bags: LIOVO rello, jinshengsi, senteis, Dewar's wo, Swiss army knife, FEGER/ figer, roentgen Paul, tegus, tocano, terrence, millan, tiandun, fulishi, youpei, etc. Low-end: VIAVIAT, etc. \xd\2. Computer bag brand OEM bag: that is, computer bags brought by notebooks of various brands, such as the famous IBM Red Dot bag, SONY bag, etc. (OEM by brands of Taigus and Sentaisi); \xd\3. Counterfeit bags with different brands of computer bags are counterfeit in terms of styles, colors, LOGO, dropped cards, etc., and even the trademarks are very similar.