GW Instek was as a manufacturer of power supplies and quickly expanded into the development of high precision electronic test and measurement instruments.

GW Instek has more than 300 product items, ranging from oscilloscopes, spectrum analyzers, signal sources, basic test & measurement instruments to video surveillance systems. GW Instek has also seen its present growth internationally. With headquarters located in Taipei, Taiwan, GW Instek has subsidiaries in mainland China, America, Japan, Korea, Southeast Asia, Europe, and India; its products are sold to more than 80 countries worldwide.