Automatic four way shuttle racking is an automated high-density storage and retrieval system for palletized goods. It is used widely in the food and beverage industry, chemical industry, and third party logistics centers. Compared with the standard radio shuttle system, ouman four way shuttle system can move in 4 directions in the main aisles and sub aisles. And meantime,no need manual operation and forklift works, so greatly save the warehouse labor cost and also improve the warehouse working efficiency.