精确的平衡是几乎不存在的：只要让你的库存能够满足客户的需求足够备货就好了，但是也不要让多余的产品在储货架上久放着。
The delicate balance is almost impossible: Keep just enough in stock to service customers promptly and fulfill orders, yet not so much that product is left languishing on the shelf.
如果无库存，则备货时间由产品加工的难易程度而定，通常需要3 - 5天。
If your orders are out of stock, processing time will depend on the items processing degree, usually takes 3-5 business days after your payment clears.
如果无库存，则备货时间由产品加工的难易程度而定，通常需要3 - 5天。
If your orders are out of stock, processing time will depend on the items processing degree, usually takes 3-5 business days after your payment clears.
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