LIXIN® LGU Polycarbonate multiwall hollow U lock sheet is a replacement product developed by GENSIN’s technical team. The whole system adopts freely sliding fixing parts, which fundamentally solves the problem of ordinary polycarbonate flat panels under different operating temperature conditions. The problem of thermal expansion and contraction, the vertical rib design prevents water-leaking on the installation surface of the entire system, and the innovative U-shaped seam structure design makes the sheets installation easier and faster, the combination is firmer, and the maintenance is more convenient. It can also develop new products with special penels color, structure, light transmittance and different thermal insulation functions according to customer requirements, and add multiple functions to meet the individual needs of users. It is a new choice for large-scale lighting, buildings, and indoor partitions.