Grand Si Ho Industrial Co., Ltd. (GSH) was founded in 1972, initially serving as the distributor for BIC ballpoint pens. The company later expanded into plastic injection molding, producing casings for toys (e.g., Mego handheld games, Atari), consumer electronics (e.g., computer monitors, Motorola set-top boxes), furniture (e.g., IKEA tables and chairs), and home appliances (e.g., air conditioners and dehumidifiers for leading brands).

GSH established and acquired various injection molding facilities in Fuqing, Fuzhou (China), and Sanchong District, New Taipei City (Taiwan) to better serve its clients. The company also founded a high-precision manufacturing division focused on developing local expertise in five-axis machining, successfully supporting talent development programs and collaborative projects in the Medical and Aerospace sectors.

More recently, GSH launched a Semiconductor division to elevate its manufacturing capabilities further and support innovation across related industries, driving progress toward a more advanced and connected future.