I this video I made 20 no of leds in 1 hour.<br />it cost me 7.5$ approximately. As in the market 20 leds will cost me about 22 dollars with one year warranty.<br />But no matter, I dint care of warranty. I know that it work well.<br />And If any of them stop working . the maximum repair cost of replacing it will be only 0.13$ dollars.
