it is made of high-quality zinc alloy material, which is durable, fine workmanship, rust proof, rust-resistant, daily scratch resistant, and has a longer service life. the middle screw can be unscrewed when removing the board, making the installation and disassembly easier. The utility model solves the problem of damage at the plate hole after the vertical plate is disassembled for many times, and is used as a structural support to strengthen the compressive damage of the corner joint.
