With the rebound consequences of human destruction of nature, such as Greenhouse Effect, air pollution, glacier melting and acid rain, as well as Chai Jing’s in-depth analysis of environmental pollution problems, prompted the department to start various provinces and cities to regulate the issue of waste discharge. Among them, the emission of flue gas is a more prominent and obvious problem of environmental protection and energy saving. The resulting gas heat exchanger has this effect.

The reaction mechanism of laser processing is realized by photochemical ablation, that is to say, the bonding between atoms or molecules is interrupted by laser energy to make them vaporize and evaporate into small molecules. UV laser marking has the advantages of small focusing spot, wide application materials, processing materials that absorb red light, etc. Mainly used in high-end market of fine processing.