4-way pallet shuttle system is automated high-density storage and retrieval system forthe handling of palletized goods. lt's an optimal solution for the storage of goods withmass quantity and small SKU, widely used in the industry of Food&beverage,chemical, third party logistics etc. lt's an updated version of standard radio shuttlesystem. The shuttle is able to move in 4 directions on the storage lanes and mainanes. ln this way the shuttle can change lanes without operation of forklift, greatlysavelabor cost andimprove warehousing efficiency.