Group 1 - The article highlights the top three companies with the highest AH premium rates: Northeast Electric (00042) at 785.25%, Beijing Jingcheng Machinery Electric (00187) at 291.45%, and Sinopec Oilfield Service (01033) at 284.04% [1] - The bottom three companies with the lowest AH premium rates are CATL (03750) at -16.62%, WuXi AppTec (02359) at -6.17%, and China Merchants Bank (03968) at -3.27% [1] - The article provides a detailed ranking of the top ten and bottom ten AH stocks based on their premium rates and deviation values, indicating significant disparities in market valuations between A-shares and H-shares [1][2] Group 2 - The top three companies with the highest deviation values are Beijing Jingcheng Machinery Electric (00187) at 23.16%, Dongjiang Environmental Protection (00895) at 18.78%, and Zhongzhou Securities (01375) at 16.54% [1] - Conversely, the companies with the lowest deviation values include Morning Paper (01812) at -52.60%, Junda Co., Ltd. (02865) at -34.18%, and Changfei Optical Fiber Cable (06869) at -34.18% [1][2] - The article emphasizes that the deviation value represents the difference between the current premium rate and the average premium rate over the past 30 days, providing insights into market trends [2]