Most powerful 5W blue laser pointer VS 1Wgreen laser pointer
At present , high-power laser pointer blue light more, green light is not much. Blue high power common 1W, 2W,and 5W,. 5W has become very high, the price is high, the lethality is great. Burning matches, cigarette ,paper, what be nothing difficult. According to the principle of green laser light, it is difficult to make ...