We went to an advertising exhibition and wandered around for a while. We checked out all the equipment and were blown away by how common laser equipment is nowadays. The application of laser technology is incredibly extensive. We came across a sheet metal laser cutting machine. My friends asked me the most about this white box: "What is it? Why is it placed next to the cutting machine?" "This is a chiller for cooling the fiber laser cutting equipment. With it, these laser machines can stabilize their output beam and cut out these beautiful patterns." After learning about it, my friends were very impressed: "There’s a lot of technical support behind these awesome machines."