Most ecommerce sellers who source from China learn their import strategy reactively — they make expensive air freight shipments, overbuy on products that do not move, and eventually stumble onto a workable system after losing money on the early mistakes. There is a faster path.
A deliberate import strategy answers three questions before you spend a dollar: which products to import, which freight mode to use, and how to scale that system as your volume grows. Here is how to think through each.
Which Products Actually Make Sense to Import from China?
Not every product category works equally well as a China import. The ones that do share a few traits:
Manufacturing is genuinely concentrated in China. Electronics, consumer goods, textiles, promotional items, plastics, hardware, and sporting goods are largely made in China regardless of where you sell them. You are not choosing China because it is exotic — you are choosing it because that is where the factories are.
The margin structure survives the freight cost. This is the filter that matters most. China sea freight on a typical LCL shipment might cost $1–3 per kilogram landed. Air freight runs $8–15 per kilogram. If your product weighs 500 grams and sells for $12, air freight alone eats more than half your gross profit. If it sells for $60, air freight is painful but survivable. Margin structure determines which freight mode is available to you.
Volume is predictable enough to commit to a shipment. Sea freight requires minimum practical volumes — a full container (FCL) starts at around 20–25 CBM of goods, and even LCL has a minimum charge equivalent to about 1 CBM. If you cannot forecast demand well enough to commit to that volume, your sourcing strategy is not ready for sea freight yet.
How to Choose Between Air and Sea Freight
The short answer: air when speed matters more than cost, sea when volume justifies the slower cycle.
A more useful framework maps freight mode to product margin:
| Gross Margin per Unit | Practical Freight Mode |
|---|---|
| Under $8 | Sea only — air destroys margin |
| $8–$20 | Sea preferred; air for urgent replenishment only |
| $20–$60 | Either, depending on cash flow and urgency |
| Over $60 | Air is viable as a standard channel |
New importers often use air for their first shipments because they have not committed to a supplier yet and want a fast test. That is reasonable. But if air is still your primary mode after six months of consistent sales, you are funding a profitability problem.
Rail freight via the China-Europe land bridge is worth knowing about if you sell into European markets. Transit time is 18–22 days versus 28–35 by sea, at a cost premium of roughly 20–40% over sea. For mid-margin products going into Europe, it is a meaningful option. The full comparison of air, sea, and rail is worth reading before you set your default mode.
Building a SKU Selection Framework
Bringing the wrong products from China is more expensive than bringing too few. Before committing to an order, run each product through these filters:
1. Landed cost analysis. Calculate total cost including product cost, freight, insurance, customs duty, and any import fees. Compare to your selling price. What is the net margin? If it is below 30% after all costs, the product has limited tolerance for anything going wrong.
2. Weight and volume check. Freight cost is a function of dimensional weight or actual weight, whichever is higher. Bulky, lightweight items (pillows, inflatable products, large plastic items) are expensive to ship relative to their value. Dense items (small electronics, jewelry, hardware) are more freight-efficient.
3. Regulatory and customs risk. Some categories attract additional scrutiny — electronics need CE or FCC certification, textiles have labeling requirements, children's products face CPSC testing requirements in the US. Factor in the time and cost of compliance before you commit.
4. Supplier concentration risk. If only one or two suppliers in China make this item at the quality level you need, your negotiating position is weak and your supply chain is fragile. Broad supplier availability is a good sign for a category.
How to Scale from Air to Sea
The transition from air to sea is the inflection point where an ecommerce import business starts to get real economics. It is also where the operational complexity increases significantly.
The practical sequence:
1. Validate demand with air. Import 100–200 units by air. Confirm sell-through rate, return rate, and customer feedback. Do not invest in sea freight until you know this product actually sells.
2. Calculate the sea freight break-even. Take your air freight cost per unit and your sea freight cost per unit (use the estimator for real numbers). The difference is cash you save on every unit once you switch. Divide your minimum sea order cost by that per-unit saving to find your break-even volume.
3. Plan for longer inventory cycles. Sea freight means 8–12 weeks from order to stock. You need to carry more inventory than with air, which requires working capital. Model this before you switch — running out of stock during the transition because you underestimated the cycle is a common and painful mistake.
4. Set up proper customs procedures. LCL and FCL shipments go through formal customs entry, which requires an importer of record, a customs broker, and documentation (commercial invoice, packing list, bill of lading, sometimes certificates of origin). If you have only shipped by air express before, this process is new. The full customs clearance walkthrough is a useful reference.
What Does a Mature Import Strategy Look Like?
A seller who has worked through the above process ends up with something like:
- Core SKUs on sea freight on a regular cycle (every 4–8 weeks depending on volume)
- A small air freight allocation for fast-moving items that need rapid replenishment or for new product tests
- A documented supplier list with at least two qualified suppliers for each top-revenue SKU
- Safety stock sized to cover the variability in sea freight lead times
That structure is not complicated, but getting there requires deliberately working through each layer rather than just reacting to whatever is running low. Register on ChinaLogisticHub to access freight rates, route comparisons, and AI-assisted cost modeling to help you build that structure faster.