Double-sided PCB board is a very important type of PCB board in the circuit board market. There are double-sided PCB boards with metal base, Hi-Tg heavy copper foil circuit board, flat and winding double-sided PCB boards, high-frequency PCB boards, mixed dielectric base high-frequency double-sided PCB boards, etc. It is suitable for a wide range of high-tech industries such as telecommunications, power supply, computers, industrial control, digital products, scientific and educational instruments, medical equipment, automobiles, aerospace defense, etc.