中富电路：公司形成并拥有多项自主研发的核心技术

Core Viewpoint - The company, Zhongfu Circuit (300814), has developed and owns multiple core technologies through independent research and development, focusing on advanced products and materials in the circuit board industry [1] Group 1: Core Technologies - The company has proprietary technologies related to high multilayer boards, thick copper boards, 5G antenna boards, high-frequency and high-speed boards, rigid-flex boards, embedded component boards, and PSIP [1] - These technologies encompass advanced materials, manufacturing processes, electrical parameter design and control, as well as quality control techniques [1]