Core Viewpoint - The company, Guolai Testing (301289.SZ), primarily engages in inspection and testing services for wires, cables, and optical fibers, and does not conduct testing related to semiconductor materials [1] Company Summary - Guolai Testing's main business includes inspection and testing of electrical wires, cables, and optical fibers [1] - The company has clarified that it has not ventured into the testing of semiconductor materials [1]