Double-sided circuit board is mainly to solve the circuit complex design and area limitations, on both sides of the board installed components, double-layer or multi-layer wiring.Double-sided PCBs are often used in vending machines, cellphones, UPS systems, amplifiers, lighting systems, and car dashboards. Double-sided PCBs are best for higher technology applications, compact electronic circuits, and complex circuits. Its application is extremely wide and the cost is low.