Group 1 - The article discusses the deadlines and procedures for non-tax revenue declaration and payment, emphasizing the importance of timely submissions [4][5][6] - It outlines specific non-tax revenue items that require declaration, such as land use rights transfer income and various environmental fees [18][19] - The article provides a step-by-step guide for taxpayers on how to submit their declarations and make payments through the designated online platform [11][12][14] Group 2 - It highlights the necessity for taxpayers to verify the accuracy of their fee source information before submission [6][8] - The article mentions the types of receipts that can be issued for non-tax revenue, specifically the Central Non-Tax Revenue Unified Receipt [18][19] - It advises on the payment process, including the need to select the appropriate payment method and the implications of multiple contracts or projects on payment processing [16][17]