Product Introduction: A universal design circuit board, usually covered with standard IC spacing (2.54MM) circular independent solder pads, appearing to have small holes throughout the board, hence commonly known as a "hole board". Compared to professional PCB printed circuit boards, perforated boards have the characteristics of low cost, easy use, and flexible expansion. It can also be called universal circuit board, universal board, or experimental board. Product features, uniform color, bright spray tin plate 2. Not easy to oxidize and deform 3. Good quality, high temperature resistance 4. Easy to weld