Group 1 - The core point of the article is that Dongpeng Holdings announced that its subsidiary, Dongpeng Sanitary Ware Co., Ltd., has received a testing report confirming that its smart toilet products meet the highest grade AAAA standards as per the national standard GB/T44460-2024 [2] Group 2 - Dongpeng Sanitary Ware's products include the Muyu series Z105 (Z105-CF), Muyu series Z104 (Z104-AF), Zhiduoxing w9561S (w9561SF), and Zhuimi w8531 (w8531F) [2] - The testing was conducted by Beijing Building Materials Testing and Research Institute Co., Ltd. [2] - The compliance with the highest grade indicates a significant achievement in product quality for the company [2]