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The Guangcan (LJ Series) is a comprehensive display equipment that meets the needs of highly automated operational command and rapid visualization of emergency command. The product features anti-overturning, modular, integrated, lightweight design, suitable for portable transportation and single-person handling, adaptable to complex terrain in the field, with the functions of separable combination, electric/manual deployment and raising and lowering, and the time required for the entire screen to be set up is less than 10 minutes. It can be quickly assembled with field command and control shelters, military tents and other emergency systems, and supports multi-level interactive applications such as actual combat command, field training and simulation.