江丰电子：宁波芯丰精密科技有限公司为公司参股公司

Group 1 - The core point of the article is that Jiangfeng Electronics (300666) confirmed its partnership with Ningbo Xinfeng Precision Technology Co., Ltd. during an interaction with investors on September 10 [1] - Jiangfeng Electronics is a shareholder in Xinfeng Precision and engages in regular cooperation with the company [1]