胜蓝股份：I/O连接器和背板连接器主要客户有立讯精密、联想、华勤等

Group 1 - The company Shenglan Co., Ltd. (300843) responded to investor inquiries on July 30, indicating that its main customers for I/O connectors and backplane connectors include Luxshare Precision (002475), Lenovo, and Huaqin [1]