Core Points - The article provides a detailed guide on how to use the electronic tax bureau app for querying and entrusting tax-related professional service institutions [1][2][3]. Group 1: Querying Tax Service Institutions - Users can log in to the electronic tax bureau app and navigate to the "Tax Professional Service Institution Query and Entrustment" section to search for relevant institutions [1]. - The query results can display various institutions based on input criteria, including credit scores and service details [2][6]. - Users can refine their search by entering specific conditions such as evaluation year and location [6][7]. Group 2: Information Access and Entrustment Process - The query results page allows users to view detailed information about each institution, including legal representatives and service counts [9]. - If users wish to entrust a service institution, they can fill out the required service information and save it, which will initiate a confirmation process with the institution [11].