The application method is: after the user's enterprise certification has passed the preliminary examination, he/she will log in to Google Browser (version 8.0 or above) on the computer and enter the procurement platform of China Railway Mall. Click User Login in the upper right corner of the homepage, and then click Random Code Login Random Code to set the binding random code.
For details, please refer to: Frequently Asked Questions on Random Codes of Merchants in Guotie Mall.
Hope to help you.