... 2. Layers:4-7. 3. SGS/BV/ISO certificate Heavy duty warehouse pallet storage rack 1. higher density of the storage. 2. ... vertical columns, layer plates, corner pieces, pins, special bolts and plastic footing. The surface is electrostatic sprayed and the color is ... , wide hanging, layer plates, safety pins, limiting nails and plastic footing. The structure is inserting connected by slice and beam ...