What does the third category warehouse mean?

A place used to store medical equipment. According to the query "Type Classification of Warehouses", warehouse types can be divided into first-class warehouses, second-class warehouses, third-class warehouses, open-air warehouses, and dangerous goods warehouses. The third-class warehouses refer to different material storage conditions and uses. According to the demand, the storage land is divided into three levels of planning land, which means that the place used to store medical equipment can ensure the safety and effectiveness of medical supplies.