... and reading speed 3.best service 4.certification:CE,ROHS wholesale good price corrot shape usb flash drives usb flash drives ... usb,metal usb,PVC USB,wood usb,Jewelry usb,foreigner trade usb,card usb,cartoon usb,wrist usb flash drives.have ... me, I will send others designs to you to refer. wholesale good price corrot shape usb flash drives