星帅尔：子公司华锦电子与广东兆驰瑞谷、湖北铭普光通等客户建立了供货合作关系

Group 1 - The company has been actively developing its optical communication and sensor components business through its subsidiary, Huajin Electronics, establishing supply partnerships with clients such as Guangdong Zhaochi Ruigu and Hubei Mingpu Optoelectronics [2] - This optical communication business is considered a strategic development direction for the company in emerging fields, and while there are sales, it has not generated profits as of 2025 [2]