Group 1 - Two companies, WanTai Electronics and JingYang Electromechanical, have terminated their review process at the Beijing Stock Exchange during the week of July 7 to July 13 [1] - WanTai Electronics focuses on intelligent explosion-proof equipment and intelligent mining information systems, primarily in the coal mining sector [2] - WanTai's revenue from 2021 to 2023 was 439 million, 546 million, and 612 million yuan, with net profits of 41.52 million, 79.63 million, and 85.52 million yuan respectively [3] Group 2 - Government subsidies significantly contribute to WanTai's profits, accounting for 45.44%, 53.52%, 29.32%, and 39.88% of total profits from 2021 to the first half of 2024 [3] - JingYang Electromechanical specializes in the research, manufacturing, and sales of crystal growth equipment for the photovoltaic and semiconductor industries [4] - JingYang's revenue from 2020 to the first half of 2023 was 107 million, 124 million, 175 million, and 155 million yuan, with net profits of 11.32 million, 18.88 million, 19.15 million, and 25.53 million yuan respectively [4] Group 3 - JingYang received a warning letter from the Zhejiang Securities Regulatory Bureau just before its application was accepted by the Beijing Stock Exchange [5] - The warning was due to undisclosed shareholding arrangements and delayed information disclosure regarding a significant sales contract worth 119 million yuan [8] - The major client, Xuying New Energy, accounted for 17.68% of JingYang's sales in 2022 [9]