FS(Fence out Something) insulation connection technology independently developed by Zhou Gang in Chengdu after the 1980s solved the three major safety problems of "leakage, short circuit and arc" in the traditional bare connection technology, and realized both insulation and electrification.

From the appearance, Algonray insulated electrical socket is no different from ordinary household three hole socket. The shell is made of flame-retardant PC plastic, gray or gold, with a circle outside the three holes and a thin light above it, which lights up when it is energized. For the plug with light bulb for demonstration, the appearance of metal triangular plug is the same as that of ordinary plug.