Shanghai Hollywave Electronic System Co., Ltd. (688682.SS) develops and provides electromagnetic field testing and simulation systems, software, and services for radar, wireless communications, and phased array applications. Founded in 2007 and headquartered in Zhangjiang Science City, Shanghai, China, the company operates primarily in China with subsidiaries in Shanghai, Chengdu, Xi'an, Beijing, and Hong Kong; it serves defense and aerospace, high-tech, ships and oceans, automobiles and transportation, and communications sectors. Core products and services include phased array calibration and measurement systems such as planar near-field, multi-probe planar near-field, cylindrical near-field, spherical near-field, multi-probe spherical near-field, indoor far-field, outdoor far-field, and compact field measurement systems; radar scattering cross-section measurement systems; radio frequency measurement systems; 5G base station antenna OTA measurement systems; automotive millimeter wave radar measurement systems; electromagnetic stealth measurement systems; intelligent measurement systems; spaceborne equipment measurement systems; 3D electromagnetic simulation software RDSim; phased array design optimization software; antenna layout simulation software; antenna design optimization software; complex electromagnetic environment simulation software; semi-physical simulation systems; phased array antenna systems; array antenna systems; multimode antenna systems; and integrated control software for general test equipment. In December 2024, the company approved the use of no more than CNY 50 million in idle raised funds to temporarily supplement working capital for up to 12 months; it reported 2024 annual revenue of CNY 269 million, down 31.8% year-over-year, with net income of CNY 14.5 million, down 46.7%, while promoting electromagnetic measurement systems and CAE simulation software amid downstream market demand.