According to Baidu Encyclopedia, Changyuan Shenrui Jibao Automation Co., Ltd. (hereinafter referred to as Shenrui) was originally named Shenzhen Nanrui Technology Co., Ltd. The enterprise type: limited liability company (wholly owned by a legal person invested or controlled by a natural person), a non-state-owned enterprise, and a state-level high-tech enterprise controlled by Changyuan Group, a listed company. Formerly known as Shenzhen Nanrui Technology Co., Ltd., founded by State Grid Electric Power Research Institute 1994 and headquartered in Shenzhen High-tech Industrial Park, it is the first generation enterprise engaged in scientific research, production and service of microcomputer protection and substation comprehensive self-protection engineering in China.

Shenrui specializes in technical research, product development, production and sales and related technical services in the fields of power system protection and control, distribution automation and industrial automation, and provides secondary complete sets of equipment and complete solutions for the power industry. The products developed by Shenrui are intelligent control equipment and real-time computer monitoring system based on embedded system. The main brands are: BP series bus protection, PRS series intelligent power control solution and ISA series substation integrated automation system, all of which have mature experience in design, technology and engineering practice. All kinds of products have independent intellectual property rights, and many achievements have won the National High-tech Gold Award, the Science and Technology Progress Award of the Ministry of Electric Power Industry (State Power Company) and the Guangdong Excellent New Product Award, and have been included in the National Torch Plan of the Ministry of Science and Technology and the recommended catalogue of urban and rural power grid construction and transformation of the State Economic and Trade Commission.