| Storage | Billed by pallet, bin or cubic foot in most US 3PL contracts, on every unit held, including slow sellers and safety stock. | Held in China. At SuperFulfill, standard storage is included in the published US$0.50 order fee, with exceptional requirements confirmed in the quotation; elsewhere, check how storage is billed. | China, when the range is wide or slow-moving; neutral for a small, fast-turning range. |
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| Receiving and pick and pack | Receiving is often billed per carton, pallet or hour; pick and pack per order plus per additional unit. | Depends on the provider. A flat per-order fee that doesn't rise with units per order favours multi-item orders. | Depends on the contract. Compare the total for your real order profile, not the headline pick fee. |
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| Inbound freight | Every replenishment pays ocean or air freight, drayage and receiving before stock can sell. | Stock moves from the factory to the warehouse within China; there is no bulk international leg. | China removes this cost; US spreads it across many units, so it's small per order at high volume. |
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| Shipping to the customer | A domestic parcel: usually cheaper and quicker for the final leg. | An international parcel to each customer: usually costs more per order and takes longer, and the gap widens with weight and size. | US, for US customers, especially for heavy or bulky orders. |
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| Import duties and taxes | Paid once per bulk shipment, on the value of the goods as imported, normally the price paid to the manufacturer plus required additions. | Since the US de minimis exemption was suspended, every parcel must be entered and pays the duty that applies to the goods. The duty base follows the sale for export to the US, which can differ from your factory price. | Often US for US-bound orders, because the duty base is usually lower. Verify with a licensed customs broker. |
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| Returns and exchanges | Customers return to a domestic address; exchanges ship from local stock. | Sending returns back to China rarely makes sense for low-value items; options depend on the destination, category and requirements. | US, for high-return categories such as apparel sold on free-returns promises. |
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| Packaging | Packaging materials are often billed per order, and custom packaging is shipped in. | Custom packaging can be produced near your manufacturers; standard mailers are included at SuperFulfill. | China, for branded and custom packaging made in China. |
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| Working capital | Stock is bought, shipped and stored abroad weeks or months before it sells. In-transit and safety stock add to the money tied up. | Stock still has to be bought, but it stays near production and can be replenished in smaller, more frequent batches. | China, for launches, variants and changing demand. |
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| Delivery time | Usually faster domestic delivery once stock is in place. | International transit, which depends on the destination, product type and shipping service. Ask for estimates for your markets. | US, when delivery speed is a selling point. |
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| International destinations | A US warehouse serves the US well. Other countries need international shipping from the US, or more warehouses. | One stock pool ships to customers in many countries. | China, for brands selling into several countries. |
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| Restocking | Every restock waits for production and then bulk freight before a bestseller is back on sale. | New production moves within China to the warehouse. | China, for fast-moving and frequently reordered products. |
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| Quality control | Problems are often found after stock has crossed an ocean, when fixing them is slow and expensive. | Inbound batches can be checked before they're shelved, close enough to the factory to resolve issues. | China, for products with variable factory quality. |
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| Peak season | Peak stock has to be forecast, produced and shipped early, and anything unsold sits in US storage. | Peak volume is fulfilled from stock near production, but parcel capacity and transit at peak need planning with your provider. | Depends on forecast accuracy and how much peak demand is concentrated in the US. |
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| Multi-warehouse complexity | Each extra region means another warehouse, another stock position to forecast and another set of integrations. | One stock position for every market. | China, for multi-market sellers; a hybrid adds back some complexity on purpose. |
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