本周，3家IPO首发上会

Group 1: IPO Overview - This week marks the last trading week of 2025, with no new IPOs scheduled from December 29 to 31 unless changes occur [1] - Three companies are set to present their IPOs this week: Weitongli for the Shenzhen Main Board, and Peicheng Technology and Guantai Vacuum for the Beijing Stock Exchange [1] Group 2: Weitongli - Weitongli focuses on the research, production, and sales of a range of electrical connection products, including hard connections, flexible connections, contact components, laminated busbars, and CCS [1] - The company aims to provide high-performance electrical connection products tailored to the specific needs of global customers, enhancing safety, reliability, and intelligence in electrical connections [1] - Weitongli serves high-end clients in various sectors, including major companies like Siemens, Schneider, ABB, Hitachi Energy, and GE in the electrical engineering field, as well as BYD, Stellantis, and others in the new energy vehicle sector [1] Group 3: Guantai Vacuum - Guantai Vacuum specializes in the research, manufacturing, and sales of vacuum equipment, with integrated capabilities from equipment design to delivery [2] - The company focuses on functional materials, particularly in the rare earth permanent magnet industry, with products such as vacuum sintering furnaces and vacuum melting furnaces [2] - The rare earth permanent magnet industry has been the largest revenue contributor for Guantai Vacuum in recent years [2] Group 4: Peicheng Technology - Peicheng Technology is positioned as a value-added service provider in the lithium battery new energy sector, focusing on the demand for key components in batteries, power supplies, and electric vehicles [2] - The company specializes in the independent research, production, and sales of third-party battery management systems (BMS) and power control systems (PCS) [2] - Peicheng Technology provides component application solutions centered around integrated circuits and discrete devices [2]