IC is a power cross-current chip, increasing this IC can ensure the life of the LED; Without IC is to reduce costs, which simply can not guarantee the life of the LED; Without IC is generally used for resistance and capacitance step-down, generally have stroboscopic; If you have no contact with electronics, you can directly use the camera to light up the finished lamp, flashing proof is IC, no flashing proof is IC; We can make a preliminary judgment