Most of the conventional lead brackets are built using leadsupport, During the construction process, the reversal cannot beavoided, so holes and slots need to be cut in the parallel glue layer.Because the inter layer bonding force of the parallel glue layer ofthe laminated board is weaker than that of the board surface,cracks often occur in the punching position. The L-shaped plate perfectly solves the problem of punching in the parallel glue surface through a 90-degree Angle, and the overall mechanical strength of the L-shaped structure is more stable.
