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A photovoltaic bracket is the structural component designed to secure solar panels to rooftops or ground-mounted systems, ensuring proper orientation, load distribution, and long-term weather resistance. Among the various bracket designs, the hollow section profile stands out. As the name suggests, hollow section brackets are formed from a single steel strip that is roll-formed and welded into a closed shape—typically square or rectangular—creating a continuous sealed cavity. This design is fundamentally different from traditional C-channel, U-channel, or L-angle open profiles.