ProbeLeader Co., Ltd. (5246.TWO) designs, manufactures and maintains testing solutions for the semiconductor, LCD panel, optoelectronics and passive components industries; it offers probe cards including cantilever, vertical, multi-DUT Cobra, high-speed CIS, high-voltage and high-power variants; load boards and IC test sockets such as Logic and DRAM types; AOI optical inspection equipment for defect and particle detection; second-hand equipment sales, relocation and refurbishment services; precision equipment maintenance; and consumables for wide band gap semiconductors. The Taiwan-based company, founded in 2002 and headquartered in Hsinchu's Xiangshan Industrial Zone, operates production bases in Hsinchu (Jinshui, Pudong factories) and Wuxi, China, with maintenance centers in Kaohsiung, Taiwan, and Shanghai, China; subsidiaries include ProbeLeader (Wuxi) Electronics Co., Ltd., ProbeLeader-Tech (Shanghai) Co., Ltd. and Auro & Pro Corp. In recent developments, Hsin Yang Investment Corporation and Subtron Technology Co., Ltd. (UNIMICRON Group) invested in the company in June 2023; it entered the emerging stock market in November 2022; and continues diversification into electric vehicles, medical and IoT sectors with expanded services in sensors, high-performance electronics and automotive applications.