盟升电子：公司主要产品包括卫星导航、卫星通信、电子对抗等系列产品

Core Viewpoint - The company, Mengsheng Electronics, specializes in satellite navigation, satellite communication, and electronic countermeasure products, primarily serving domestic special industries and markets such as maritime and aviation [2]. Group 1: Product Overview - The main products of the company include satellite navigation devices based on the BeiDou satellite navigation system, satellite communication antennas and components, and electronic countermeasure products [2]. - Satellite navigation products consist of navigation terminal devices, satellite navigation receivers, components, and specialized testing equipment, mainly used in domestic special industries [2]. - Satellite communication products include satellite communication antennas and phased array antennas, primarily applied in maritime and aviation sectors [2]. - Electronic countermeasure products focus on radar countermeasures, including terminal defense products, electronic attack products, and training/testing products, utilized across various fields and platforms [2]. Group 2: Market Application - The company's satellite navigation products are currently not applied in mobile direct satellite internet access [2].