Log on to the patent electronic application website, click on the relevant information column to download the opinion statement of electronic application user registration affairs, fill in the form as required, and mail the paper form and relevant supporting documents to the Patent Office. After the materials are approved, the relevant personnel will handle the replacement procedures for the users. Please download the certificate and back it up in time, so as to avoid the loss of digital certificate affecting the system use.
Source: China National Intellectual Property Administration Electronic Application Column "Frequently Asked Questions on Electronic Application (2)"