About Nanrui's products, we are currently in contact with RCS-9000 series, which are mainly used in the main network project of power supply bureau, and the price is the highest in China. Regarding Xuji Electric's products, there are 800 series and WGB series of microcomputer protection, of which 800 series is more used in the main network of power supply bureau, and the voltage level ranges from 220KV to 10KV, and the price is the same as or slightly lower than that of Nanrui products; The positioning of WGB series is medium and low voltage system, mainly for industrial customers and municipal engineering, and the cost performance of distribution systems below 35KV is relatively high.