Pi Liang Chiu

Princo Corp. engages in the design, manufacture, and sale of vacuum equipment. It operates through the following business segments: Tool coating, Blank compact discs, System in package (SiP) chip modules, and Watches. Its products include optical storage media, storage equipment and systems, advanced packaging products, Internet of things (IoT) products, tool coating, and circuit boards. The company was founded on September 22, 1983 and is headquartered in Hsinchu, Taiwan.

Luren Precision Co., Ltd. manufactures and markets gear cutting tools, machinery, and spinning pumps. It offers hob cutters, including multi-gashes, bore and shank-type cutters, special profile cutters, sprocket cutters, spline cutters, worm hobs, milling cutters, carbide hobs, and inserted-blades; and shaving cutters, such as conventional, diagonal, plunge, underpass, and shaver cutters for internal gears. The firm also designs, manufactures, and markets machinery, including hobs sharpening machines, worm thread grinding machines, horizontal and vertical gear profile grinding machines, CNC gear tool grinding machines, and continuous generating gear grinding machines. The company was founded by S. D. Chen on May 2, 1994 and is headquartered in Hsin-Chu City, Taiwan.