MPI Corp. engages in the provision of testing of semiconductors, light emitting diodes, photo detectors, lasers, materials research, aerospace, automotive, fiber optic, electronic components, and related activities. Its business sectors include probe cards, photonics automation, advanced semiconductor test, thermal test, and celadon systems. It operates through the following geographical segments: Taiwan, China, U.S.A, Singapore, Korea, and Other Countries. The company was founded on July 25, 1995 and is headquartered in Zhubei, Taiwan.