GW stands for "Gowin Semiconductor," which is a manufacturer specializing in FPGA (Field-Programmable Gate Array) solutions and other semiconductor products.
GW Semiconductor, or Gowin Semiconductor, is based in mainland China, specifically in the city of Nanjing.
GW Semiconductor offers a range of products including FPGAs, CPLDs (Complex Programmable Logic Devices), and various development tools for electronic design and applications.