In the 21st century, the global environmental protection industry has begun to enter a stage of rapid development, gradually becoming an important force to support the growth of industrial economic benefits, and is becoming a number of countries
Important goals and keys to reforming and adjusting the industrial structure. Under the requirements of the development of a circular economy in China, environmental protection expenditure subjects have been formally incorporated into the national budget. The government has proposed new ideas and measures for environmental protection. The state has increased investment in the construction of environmental protection infrastructure, which has effectively stimulated market demand for related industries . The manufacturing of environmental protection equipment such as sewage treatment equipment, exhaust gas treatment equipment, air purifiers has also introduced leading laser processing technology.