胜宏科技(300476.SZ)：不涉及AEC产品业务

Core Viewpoint - Shenghong Technology (300476.SZ) specializes in the research, production, and sales of high-density printed circuit boards and does not engage in AEC product business [1] Company Summary - The company is focused on high-density printed circuit boards, indicating a niche specialization in the electronics manufacturing sector [1]