Lasers are high-energy precision equipment, and their production and use involve strict safety regulations and laws and regulations. In China, the unauthorized manufacture and use of lasers, especially high-power lasers, is illegal and may pose a threat to personal safety and public safety. We strongly recommend that the public do not try to make homemade lasers, but should purchase laser products that meet national standards through legal channels. If you have legal scientific research or industrial needs, please consult a professional institution or licensed unit to ensure that all operations are carried out under the guidance of professionals and comply with relevant safety and legal requirements.