1, since the heavy-duty sliding shelves evolved by the pallet rack, roller slide, slide into the slope, using the weight of the goods, the first in first out of the shelf, suitable for mass similar goods FIFO storage The role of space utilization is high, the warranty period, long-term backlog shelf. 
 2 shelves total depth (length of the slide) should not be too large, or not use the up and down "dead" will increase the impact of space utilization, and the slide is too long decline will be less controllable downward momentum. easily cause the decline in poor standing in the way, the tipping of the pallet rack. 
 3, in order to decline the smooth, such as ramps longer should be in the middle of the damping device, tipping pallets fell to the bottom to the impact, should be located at the bottom of the ramp buffer unit and pick up divider, so the design, manufacture, installation difficulty, high cost. 
 Such shelves is not easy too high generally less than 6 m, single prop shelf weight less than 1000KG Otherwise, its reliability, operability will be reduced.