Group 1 - The overall market trend on September 2 showed a decline in major indices, with the Shenzhen Component Index down by 2.14%, the Shanghai Composite Index down by 0.45%, and the ChiNext Index down by 2.85% [1] - The Shanxi sector experienced a slight decline of 0.65%, influenced by the overall market performance [1] - Notable performers among Shanxi-listed companies included Keda Control, which saw a rise of 7.08%, and Huayang New Materials, which increased by 4.64% [1] Group 2 - Keda Control, established in November 2000 and headquartered in Taiyuan, Shanxi, focuses on smart mining, smart municipal services, and industrial internet, having been listed on the New Third Board in 2014 and completing its IPO on the Beijing Stock Exchange in 2021 [1] - Huayang New Materials, formerly Taiyuan Chemical Co., was established on February 26, 1999, and listed on the Shanghai Stock Exchange on November 9, 2000, with an initial public offering of 105 million shares [1][2] - Huayang New Materials specializes in the production and sales of PBAT and modified products, precious metal catalytic nets, and has shifted its strategic focus towards the new materials industry since its rebranding in October 2020 [2]