Core Viewpoint - Zhonghua Equipment (600579.SH) provides a range of nuclear radiation instruments, emphasizing their applications in various industrial environments, but clarifying that these instruments are not used in nuclear power plants [1] Group 1: Product Types - The company offers four types of nuclear radiation instruments: 1. Radioactive level gauges and level switches for measuring levels (density) of materials in closed containers under high temperature, high pressure, high viscosity, corrosive, boiling, toxic, and high dust conditions [1] 2. Radioactive density meters for measuring density of similar materials in closed containers under the same conditions [1] 3. Remote monitoring systems for radioactive sources, which include functions for locating radioactive sources, real-time measurement of surface dose equivalent, and monitoring environmental temperature and humidity [1] 4. Radiation environment monitoring instruments [1] Group 2: Application Context - The nuclear radiation instruments are designed for industrial applications and are not utilized in nuclear power plants, indicating a focus on other sectors [1]