300007: The HwiseTM502 radioactive source automatic monitoring system produced by the company can send the collected radiation dose rate data and status information to the safety management department and the environmental protection monitoring department in time through the monitoring network, which provides a set of safe and effective management means for the source-related units and greatly improves the work efficiency of the environmental protection department. The company's main business is the research and development, production and sales of gas sensors and gas detection instruments, and the export of self-operated products. Gas sensor is the core component and upstream product of gas detection instrument. At present, the gas sensors sold by subsidiary Microson Electronics are mainly semiconductor sensors and catalytic sensors. Electrochemical sensors and infrared sensors produced by subsidiary Microson Electronics are mainly sold to the parent company. Gas detection instruments are mainly divided into industrial, civil and police gas detection instruments according to their application fields. Industrial gas detection instruments are mainly used in petroleum, chemical industry, metallurgy, coal mine, liquefied gas and other enterprises. Civil gas detection instruments and meters are mainly used for gas detection and alarm in public places and families. Police gas detection instruments mainly refer to alcohol detectors used by traffic police to detect the blood alcohol content of motor vehicle drivers.

Kai Nuo Science and Technology 600398:

The company's main business is the production and sales of high-grade worsted fabrics, high-grade suits, shirts and professional clothes, as well as dyeing and finishing. The company used to be the leading enterprise of worsted fabrics in China, and the production capacity and quality of worsted fabrics were among the best in China. The company's antibacterial and deodorizing fabrics, flame-retardant worsted fabrics, radiation-proof fabrics, shape memory fabrics and new suede worsted women's fabrics have undergone scientific and technological achievements and new product appraisal, filling the domestic gap. Among them, the anti-radiation fabric is made of metallic silver fiber filaments and wool yarns in different ways, which has permanent anti-radiation function and reduces the radiation damage of household appliances to human body without affecting the performance of clothing.