依顿电子(603328.SH)：目前公司主要产品应用于汽车电子及计算与通信等领域，少量产品应用于消费电子领域

Group 1 - The company, Yidun Electronics (依顿电子), specializes in the manufacturing and sales of high-precision and high-density double-sided and multi-layer printed circuit boards [1] - The main applications of the company's products are in automotive electronics and computing and communication sectors, with a smaller portion used in consumer electronics [1]