When you order from multiple suppliers on 1688, you cannot let each parcel fly back to Vietnam separately. The cost stacks up fast. A consolidation warehouse is the link that solves this, and understanding how it works gives you control over freight costs and protects you from fees you did not see coming.
What a consolidation warehouse does
When you order from several different suppliers on 1688, each factory ships on its own schedule. Order A arrives Tuesday. Order B arrives the following Saturday. Order C is still in production. If you let every parcel travel on its own, you pay freight on every small package, clear customs multiple times, and lose track of what has arrived.
A consolidation warehouse is a staging location in China, typically near a major freight hub: Guangzhou, Yiwu, or Shenzhen are common. You use that warehouse's address as the delivery address for all your 1688 orders. Stock from different factories collects there, the warehouse waits until you say go, repacks everything into one shipment, then sends the whole lot to Vietnam.
The practical result: you pay one freight rate on a larger shipment instead of many small-parcel rates. On most sea and land routes, the cost per kilogram drops noticeably as shipment weight grows.
How a shipment moves through consolidation
Here is what typically happens from order to delivery:
- You place orders and enter the warehouse address. At checkout on 1688, you fill in the consolidation warehouse address instead of your own. The warehouse usually gives you a customer code to append to the address, so they can tell whose parcels are whose.
- Factories deliver to the warehouse. Each supplier ships in according to their own production schedule. The warehouse receives the parcel, weighs it, counts items at a surface level, and logs it into their system. You usually get a notification or can check a dashboard when each parcel arrives.
- You decide when to consolidate. You control the timing. Ship what has arrived now if you are in a hurry. Wait for more orders if you want to save on freight. The warehouse repacks into one outbound shipment, adds wrapping or reinforcement if you request it.
- The shipment travels to Vietnam. By sea, land, or air, depending on your route choice. Sea freight typically runs around 18 to 30 days. Land routes tend to be a few days faster than sea. Air is a few days but costs significantly more per kilogram.
- Customs clearance and final delivery. The shipment arrives at the border, you declare it, pay any applicable duties, and then it comes to your warehouse or delivery point.
How consolidation cuts freight costs
International freight is typically charged by actual weight or volumetric weight, whichever is higher. Dense, heavy goods tend to be charged on actual weight. Large, light goods (lots of air packaging, hollow items, foam-padded products) are often charged on volumetric weight, which can be much more expensive than actual weight.
When you merge parcels, the ratio of actual weight to volume often balances out. A single small light parcel shipped alone gets hit with a high volumetric rate. Combine it with several dense, heavy parcels and the full shipment may be charged on actual weight, which comes out cheaper.
Beyond that, a larger shipment gives you better negotiating leverage with the carrier. Carriers prefer volume and typically offer lower per-kilogram rates on bigger lots.
The exact saving varies by route and product type, so there is no fixed number. In practice, operators who switch from sending parcels individually to consolidating in batches usually see a clear reduction in per-kilogram cost, especially on products with high volume relative to weight.
The fees to ask about before you commit
This is the most important section, and the one that catches new importers off guard. Consolidation warehouse costs are not just the freight rate. Ask each potential warehouse about every line item before you send your first parcel:
- Receiving fee. Some warehouses charge a small fee each time they receive an inbound parcel from a factory. Small per parcel, but it adds up if you have many small orders.
- Storage fee. Ask how many days of free storage are included and what the daily rate is after that, either per parcel or per kilogram. If you tend to wait a while before consolidating, this can become a real cost.
- Repacking and reinforcement fee. Consolidating and repacking is usually a charged service, either per parcel or per kilogram of the outbound shipment. Additional reinforcement (stretch wrap, corner guards, extra strapping) typically carries an extra charge.
- Photography or inspection fee. Some warehouses photograph incoming parcels. Some offer this free, some charge. If you want someone to open a box and inspect items before they go into the consolidated shipment, ask about that service and its cost separately.
- Oversized or overweight surcharge. Items outside standard dimension or weight limits usually attract a surcharge, or some warehouses will not accept them at all. Check the limits before importing anything unusually long, wide, or heavy.
- Order-service fee if the warehouse also buys for you. Some operators double as purchasing agents, placing the 1688 orders on your behalf. If you use that service, there is a service fee, typically a few percent of the order value. Factor this into your landed cost calculation.
- Exchange rate applied at billing. When you pay the warehouse in VND, the rate they use to convert from yuan affects your total cost directly. Ask which rate they apply and at what point in the process they lock it in. Around 3,600 VND per yuan is a rough ballpark as of mid-2026, but it moves, so re-check when you calculate.
Picking the right warehouse for your product type
Not all consolidation warehouses handle the same freight. Some specialize in small, light goods (accessories, stationery, cosmetics). Others can manage bulky or heavy items. Some only run sea and land routes; others offer air as well.
A few things to evaluate before you commit:
- Does the warehouse have an online tracking system? You need to see when each parcel has arrived, what its actual weight is, and where your outbound shipment stands without having to message someone every day. A warehouse without decent tracking visibility creates noise in your operations.
- Can they handle your specific product? If you import fragile goods or items that need special handling, confirm before sending. Do not assume.
- How long does it take from when your stock is complete to when the outbound shipment leaves? Some warehouses are slow at this stage, and that time comes directly out of your total lead time.
- What goods do they refuse? Most consolidation warehouses will not accept liquid goods, large quantities of lithium batteries, or certain regulated categories. Check their restricted-goods list before importing anything that might qualify.
Putting warehouse fees into your real landed cost
This is the step new operators most often skip. Consolidation fees are part of your actual cost per unit, not a separate overhead line that sits outside the margin calculation.
A simple approach: add up all warehouse fees for the full shipment (receiving, storage, repacking) plus the freight to Vietnam, then divide by the total number of units in that shipment. That gives you the real per-unit shipping cost. Add it to the 1688 product price plus any duties, and you have a real landed cost to work with.
If you skip this step, your margin on paper looks wider than it actually is. Products that look profitable at the 1688 price can turn flat or negative once every fee layer is counted.
Bottom line
Consolidation warehouses are not complicated, but choosing the wrong one or missing a fee line will quietly inflate your costs. Ask about every fee before you send the first parcel, build those fees into your per-unit landed cost, and pick a warehouse with tracking you can actually read so you are not guessing where your stock is.