Simmtech Holdings Co., Ltd., through its various global subsidiaries, is centrally involved in the specialized development and manufacturing of advanced substrates and high-density interconnection (HDI) printed circuit boards for the worldwide semiconductor industry. The group's offerings include crucial packaging substrates for chip assembly and module PCBs designed for memory expansion in IT devices such as servers, personal computers, and mobile technology, positioning it as a core supplier to leading semiconductor manufacturers. The enterprise was initially established in 1987 as SimmTech Co., Ltd., adopting its current designation, Simmtech Holdings Co., Ltd., in July 2015. Its corporate headquarters are located in Cheongju, South Korea.