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 materia...