Core Viewpoint - Tianhe Defense (300397) is actively engaged in the RF chip sector through its subsidiary Chengdu Tongliang, offering a diverse range of products for various applications, including military and civilian uses [1] Group 1: RF Chip Products - The company’s products in the RF chip domain include high-reliability RF transceiver front-end chips/modules for base stations, wireless communication RF transceiver chips/modules, radar sensing chips/modules, and customized equipment [1] - Specific products offered by Chengdu Tongliang encompass low-noise amplifiers, driver amplifiers, power amplifiers, switches, RF front-end modules, and radar sensing chips and modules [1] Group 2: Underwater Autonomous Vehicles - Tianhe Haifang, a subsidiary of the company, specializes in underwater autonomous vehicles that serve dual military and civilian purposes [1] - These vehicles are capable of long-term submersion and autonomous navigation, equipped with various sensors to perform different underwater tasks [1] - The autonomous vehicles can execute operations such as combat missions or ocean exploration and are designed for autonomous recovery and repeated use [1]