Group 1 - Mingyang Circuit focuses on the R&D, production, and sales of printed circuit boards (PCBs), covering high multilayer boards, HDI boards, and rigid-flex boards, widely used in industrial control, communication equipment, and automotive electronics. The demand for high-reliability, high-density PCBs is continuously growing due to industrial automation upgrades, 5G communication network construction, and the increasing penetration of new energy vehicles [1][32] - Weirgao specializes in the R&D, production, and sales of electronic-grade special epoxy resins and related composite materials, which are key raw materials for PCBs. The demand for high-frequency, high-temperature, and low-loss materials is increasing in 5G communication, data centers, and new energy vehicles, leading to an expanding market space for specialty epoxy resins [2][33] - Qiangda Circuit focuses on the R&D, production, and sales of high-density interconnect printed circuit boards (HDI), widely used in consumer electronics such as smartphones and tablets. The market demand for high-end products like high multilayer HDI and AnyLayer HDI is continuously growing due to the recovery of the consumer electronics market and the upgrade of smart terminal functions [3][34] Group 2 - Benchuan Intelligent specializes in the R&D, production, and sales of PCBs, with core products including communication boards, automotive boards, and industrial control boards. The market demand for high-reliability, high-frequency PCBs is expanding due to the construction of 5G base stations and the upgrade of new energy vehicle systems [4][35] - Kexiang Co., Ltd. focuses on the R&D, production, and sales of HDI and high multilayer boards, covering various fields including consumer electronics and automotive electronics. The demand for high-end PCBs is continuously growing due to the functional upgrades of consumer electronics and the increasing demand for automotive electronic systems [5][36] - Jinlu Electronics specializes in the R&D, production, and sales of PCBs, with core products including automotive electronic boards and communication boards. The demand for high-reliability, high-integration PCBs is continuously growing due to the increasing penetration of new energy vehicles and the deep coverage of 5G networks [6][37] Group 3 - Shengyi Technology is a leading global supplier of copper-clad laminates (CCL) and related electronic materials, with products widely used in PCBs and electronic packaging. The demand for high-end copper-clad laminates is continuously expanding due to the increasing demand for high-frequency, high-temperature materials in 5G communication and data centers [7][38] - Xiehe Electronics focuses on the R&D, production, and sales of PCBs, including high-frequency and high-speed boards. The market demand for high-end products is continuously growing due to the advancement of 5G networks and the expansion of new energy vehicle systems [8][39] - Shiyun Circuit specializes in the R&D, production, and sales of PCBs, covering automotive electronics, consumer electronics, and industrial control. The demand for high-reliability, high-integration automotive PCBs is continuously growing due to the increasing complexity of in-vehicle electronic systems [9][40]