The PCB stands for Printed Circuit Board Printed Circuit Board is also called.
Currently we are using electronics or electronic components in most of the printed circuit board is used.
PCB-mount electronic components and functions of the signal and the electrical characteristics of the wiring for the electrical connection are responsible for the human body when compared to the importance of the skeletal and nervous system have a corresponding.   

DOUBLE & MULTI PCB

Circuit 上, 下 sided PCB formed a two-sided component mounting density as compared to the product 上, 下 Pattern connected by a through hole.

QUALITY CEM-3, FR-4 
PURPOSE LEDLIGHTING, BACKLIGHT UNIY(BLU), IMPEDANCE BOARD, THIXOFORMING, INVERT