重力式货架是采用滚筒式轨道，利用货物的自重，实现货物的先进先出，适合于大批量同种类货物的存储，空间利用率极高。

    Gravity Racking using roller path system or pallets with roller,under the influence of gravity,"first in first out" is available,it is suitable for store large quantity and same kinds of goods,High unilization ratio of storage space.