Log in to China Trademark Network, select "Registration" and "Trademark Inquiry" from the menu on the left side of the homepage, enter your trademark registration number on the trademark inquiry page, and click the "Inquiry" button; Find your trademark information on the query results page and click the "Details" button; Finally, find the item "download code of trademark registration certificate" in the column of "trademark agency information" on the trademark details page, and you can see the download code of trademark registration certificate.