Aluminum folding truss is a truss produced to save space and facilitate installation. The foldable quadrangular truss has reasonable design, simple structure, convenient operation, good stability and high reliability. It is suitable for wide promotion. The size of the folding trusses are 400x600mm & 520x760mm, 500mm, 1000mm, 2000mm, 3000mm in length. The equipment is mainly used for the construction of inkjet backgrounds. Compared with circle truss, folding truss is flatter and easier to operate.