Zefatek Co., Ltd. is a manufacturer of industrial measuring instruments and programmable power supplies with various connectivity interfaces, such as GPIB, USB, CAN and LAN. Their power supplies range from low voltages to very high voltages (60 KV). Zefatek has its own manufacturing facilities for micro-electronic hybrid ICs, power devices and modules, such as IGBT drivers and intelligent power modules. Zefatek also has done system integration businesses with large Korean companies in the field of Test and Measurement for CRT manufacturing and Li-ion battery pack manufacturing.