2. There is a trademark application guide in official website. First, apply for a trademark digital certificate, fill in the materials, and wait for the trademark office to review and wait for the trademark digital certificate issued by the trademark office, that is, usb-key.
3. Insert the usb-key issued by the Trademark Office into the usb port of the computer, and then log in to official website of the Trademark Office again.
4. Fill in the PIN code, modify it after logging in for the first time, then apply online, and follow the online steps to fill it in. If you don't understand anything, you can refer to the trademark application guide or call the trademark service number.