Shenzhen city leyre science and technology development ltd., with its registered address in 1 3-51 (office space) of the yonggwang century building, located on the south side of boang district, shenzhen city, on the south side of shenzhen city, is the shenzhen city market supervisory authority, with representatives of legal persons, who operate in the following areas: general operating projects: electronics, environmental metals, mineral-friendly detection equipment, development and sale of gas equipment; investment promotion business (specified projects to be declared separately); domestic trade; and import and export of goods and technology. Sale of instruments for solid waste detection; sale of instruments for monitoring and detection of air pollution; sale of instruments for monitoring and detection of water quality pollutants; sale of instruments for environmental emergency detection; sale of smart instrument instruments; sale of electrical equipment; development of new materials technology; development of mechanical equipment; manufacture of instrument instruments; manufacture of instruments for solid waste detection; manufacture of instrument for monitoring and detection of air pollution; manufacture of instrument for monitoring and detection of water quality pollutants; manufacture of instrument for environmental emergency detection; manufacture of specialized equipment (manufacturing without licensed professional equipment); manufacture of smart instrument instruments; information advisory services (advisory services without licensed information). (b) licensing of projects (in addition to those subject to legal authorization, operating on the basis of a legal licence): production of electronics, environmental metals, mineral-friendly detection equipment, gas equipment. (a project subject to legal approval may only be carried out with the approval of the relevant department, subject to the approval documents or licences of the relevant department)