山西：如何查询企业的纳税信用级别？操作步骤

Group 1 - The article discusses the tax credit management system established by the National Taxation Administration, which categorizes tax credit levels into five grades: A, B, M, C, and D [3]. - It provides a step-by-step guide on how to check tax credit levels through the electronic tax bureau, emphasizing the importance of accessing the "Tax Credit Management" function [4][6]. - Users can view their current year's tax credit evaluation and switch between different evaluation years to see historical data [6][7].