This product adopts a typical “sandwich” structure, which is a kind of flexible, safe and reliable power transmission and transformation system with many good characteristics, such as reasonable design, superior performance, stable and high distribution efficiency, good heat dissipation, voltage reduction, high mechanical strength, small footprint, convenient installation, etc. It is widely used in large commercial square, real estate, gymnasium, hospital, industrial plant, high-rise building or high-tech environment for low cost and high efficiency transmission and distribution solutions.