Lasers are used in all aspects around us, but when most people hear lasers, they think they are dangerous and will cause damage to their eyes. But in fact, if you understand the classification of laser safety levels, you will know that lasers are also safe. Lasers exist that can be used to illuminat

Advantages &Disadvantages of 40W Engraving Laser HeadThe engraving laser head is an electronic device that generates high-energy blue laser and is used to finely engrave patterns and text on the surfaces of various materials. The laser engraving heads used in personal DIY or light industrial product