Company Overview - Beijing Sifang Automation Co., Ltd. was established in 1994 and is primarily engaged in the manufacturing of computers, communications, and other electronic equipment with a registered capital of 832.251 million RMB [2] - Beijing Sifang Jibao Engineering Technology Co., Ltd. was founded in 2003 and focuses on the manufacturing of instruments and meters with a registered capital of 1.05 billion RMB [2] Patent Application - Beijing Sifang Jibao Engineering Technology Co., Ltd. applied for a patent titled "A Method for Automatic Identification of Multi-Bus CT Disconnection and Relay Protection Device," with publication number CN119994780A, on January 2025 [1] - The patent describes a method that includes obtaining multidimensional interval data models from each section within a station, creating a bus-interval two-dimensional grid map, and processing the grid map to identify isolation zones and calculate differential protection currents [1] - This invention aims to effectively identify various types of CT disconnections faced by relay protection devices and accurately locate the specific position of CT disconnections, enhancing the accuracy of CT disconnection judgment in complex bus structures [1] Investment and Business Activities - Beijing Sifang Jibao Engineering Technology Co., Ltd. has made investments in 5 companies and participated in 5,000 bidding projects, holding 792 patents and 13 administrative licenses [2] - Beijing Sifang Automation Co., Ltd. has invested in 21 companies, also participated in 5,000 bidding projects, and holds 1,674 patents along with 42 trademark registrations and 19 administrative licenses [2]