Silicon Top Co., Ltd is specializing in researching & developing photoelectric relays which is also known as solid state relays. We study optical coupler chip, power MOSFETS and thyristor domestically and internationally in professional level, finally launched solid state relay with multi-chip assembly. The application of our solid state relay is professional focusing on expertise filed in motor control, communications and instrumentation application. It is recognized and applied extensively by Chinese leading home appliance manufacture.