Engaged in the research and development, production, installation, sales, technology promotion, technology transfer, technical consultation, and technical services of instruments, meters, environmental management equipment, and related products. Wholesale and retail of electronic products, hardware products, instruments and meters, needles, textiles, and communication equipment. Development, production, and sales of software products. Development, production, and sales of environmental monitoring instruments. Data processing, data services. Computer information system integration services, maintenance and operation services for environmental monitoring instruments. Environmental protection engineering and environmental testing. Production and sales of packaging machinery and equipment. Import and export business of goods.