Shanghai Shangji Technology Co., Ltd. is a high-tech company specializing in the research and development, design, production, sales, and service of power system relay protection and smart grid power automation products. The company relies on the superior environment of Shanghai, an international metropolis, and has a team of senior relay protection experts who are familiar with the actual operation characteristics of China's power grid. It collaborates with well-known universities at home and abroad to continuously introduce advanced technologies from both domestic and foreign sources, actively responding to market demand, continuously innovating technology, and adhering to its leading position in the industry. The company mainly produces power relays and microcomputer comprehensive protection devices, intelligent power distribution equipment, and substation automation monitoring systems. The product is widely used in the transmission, distribution, and transformation systems of major national projects such as electricity, industrial and mining, railways, and construction. The product is exported to Southeast Asia and the Middle East. The company has domestically leading testing instruments and calibration equipment, and has established a simulated aging system. With exquisite technology, strict production and manufacturing processes, a sound production management system, and meticulous cultivation, we strive for excellence. The product has passed the testing of the National Relay Protection and Automation Equipment Quality Supervision and Inspection Center and obtained ISO9001 international quality system certification. The company's business philosophy is "technological innovation, integrity and pragmatism". With pre-sales technical support and perfect after-sales service, Shangjie Technology has established a good reputation in the power system and is highly recognized by major design institutes, winning the trust of complete transmission and distribution enterprises. Upcoming Technology, with a high sense of responsibility towards society and users, adheres to the path of specialization, continues to innovate and surpass, and makes greater contributions to China's smart grid power automation!