Guide · China fulfillment models

Coordination layer vs dropshipping agent vs inventory 3PL

A coordination layer, a dropshipping agent and an inventory 3PL are three distinct models. A coordination layer handles parcels the merchant already bought from its own suppliers — receiving, consolidating, prepping and forwarding per shipment, with no inventory required. A dropshipping agent sources and purchases products on the merchant’s behalf, then fulfills. An inventory 3PL stores the merchant’s stock and ships from it.

The three get conflated constantly, usually because all of them will say “we ship your orders from China”. What separates them is not service quality but what each one asks you to hand over: your supplier choice, your cash, or neither. This page compares the models rather than vendors, and states where WooliiPorter sits at the end.

Last updated: 2026-08-01 · A comparison of models, not of vendors. · Reviewed by Alice Zhou

The three models, side by side

This is a comparison of models, not of vendors. As reference points: the dropshipping-agent model is what platforms such as CJdropshipping operate (they source products and fulfill orders on the seller’s behalf); the inventory-3PL model is what fulfillment networks such as ShipBob operate (they store the seller’s inventory and ship orders from their warehouses). Both are legitimate models — they solve different problems than a coordination layer does.

DimensionCoordination layerDropshipping agentInventory 3PL
DefinitionCoordinates the China leg for parcels the merchant bought from its own suppliers: receiving, value-added services, consolidation, dispatch, tracking, settlement.Sources, purchases and fulfills products on the merchant’s behalf; the agent sits between the merchant and the factories.Receives the merchant’s bulk inventory into its warehouse, then picks, packs and ships each order from stored stock.
Who owns the supplier relationshipThe merchant. It selects suppliers, places orders and pays them directly; the coordination layer never handles the purchase payment.Largely the agent. The merchant typically chooses products from the agent’s catalog or sends links; the agent buys from factories it selects.The merchant sources and buys goods itself, then transfers the stock into the 3PL’s custody.
Inventory commitmentNone. Parcels flow through per shipment; there is no storage commitment.Usually none for the merchant — goods are bought per order or held briefly by the agent.Required. The model only works with stock pre-positioned in the 3PL’s warehouse, with storage fees while it sits.
Pricing modelPay per shipment: a packed quote plus itemized service fees per parcel or consolidation.Product price + service margin + shipping, quoted by the agent; the product cost includes the agent’s markup.Receiving + storage (per volume per month) + pick-and-pack fee per order + shipping.
Quality and cost control of goodsFull merchant control — the merchant negotiates its own factory prices and specs.Depends on the agent’s sourcing; the merchant does not usually see the factory price.Full merchant control over sourcing; the 3PL only handles what it receives.
Best fitEstablished merchants with multiple China suppliers who want per-shipment consolidation, prep and forwarding without warehousing.New sellers who have no suppliers yet and want product sourcing and fulfillment handled in one place.Sellers with predictable volume on stable SKUs who want fast local dispatch and accept storage costs.

What each model asks you to give up

Naming the three models is the easy part. What decides whether a model still fits you in a year is what it costs you in things that are not money: control over your suppliers, the ability to change vendor, and how much of your working capital sits on a shelf.

ExposureCoordination layerDropshipping agentInventory 3PL
Supplier choiceKept. You select, negotiate and pay suppliers yourself.Given up in practice. You choose from the agent’s catalog or send links, and the agent selects the factory.Kept. The 3PL only handles what it receives.
Working capitalNone committed before a sale.None committed before a sale, but the factory price you pay is not one you set.Committed per SKU, before anything has sold, plus storage while it sits.
Visibility into the factory priceFull — it is your own purchase order.Usually none. The product price arrives bundled with the agent’s margin.Full — it is your own purchase order.
Who carries dead stockNobody. There is no stock to be dead.The agent, on catalog items; you, on anything they bought to your spec.You, plus storage until it is withdrawn or sold.
What breaks when demand spikesYour supplier’s lead time. The China leg absorbs volume; the purchase does not.The agent’s sourcing capacity, which you cannot see into.Nothing, until stock runs out — then you are back to a full reorder cycle.
What breaks when demand disappearsNothing. You stop buying.Nothing, if you bought nothing.Storage keeps accruing on goods that have stopped earning.
Switching cost if it goes wrongLow. The suppliers are yours and the parcels are already in your name.High. Rebuilding supplier relationships from scratch is the actual product you outsourced.Medium. Goods are yours but physically inside someone else’s warehouse.

How to choose

Match your situation to the model, and expect more than one to fit — the models combine. Merchants commonly start with an agent, move to owning their suppliers plus a coordination layer for the China leg, and add a destination-country 3PL only for their fastest-moving SKUs.

If this is true of youChooseAnd accept this trade-off
You have no suppliers yet and need products as well as shippingDropshipping agentSourcing and fulfillment arrive bundled. The factory price and the quality decisions sit with the agent rather than with you.
You have stable SKUs, predictable volume, and destination-country speed is the priorityInventory 3PL in the destination marketPre-positioned stock buys the fastest last-mile dispatch. Capital is locked in stock and storage accrues whether the goods sell or not.
You already buy from several China suppliers and the pain is receiving, consolidating, prepping and reconcilingCoordination layerExactly that scope, per shipment, without taking over purchasing or requiring inventory. You still have to find and manage your own suppliers.
You want to test SKUs without buying stock, but stock your proven onesCoordination layer with optional stockingRouting is per order line, so both run in one store. You take on the stocking decision per SKU rather than for the whole catalog.
You need FBA first-leg prep done before the shipment departs ChinaCoordination layerUnit-level prep is done where the goods already are. Prep must be declared explicitly on the order, which is more up-front work than “they will sort it out”.

Where WooliiPorter sits

WooliiPorter is a technology-native, end-to-end China fulfillment operator. Merchants keep their own China suppliers and pay them directly, while Woolii operates receiving, value-added services (with mandatory photo evidence), consolidation, warehouse fulfillment, packing, dispatch coordination, unified tracking and exception follow-up. The service is not software-only and it is not a buying agent; Woolii never handles the supplier purchase payment or forces an inventory commitment.

One digital operating layer connects that physical work to store orders, smart routing, live inventory, packed quotes, signed webhooks, Merchant API and MCP. Merchants can start supplier-direct with no stocking and, as volume grows, optionally hold merchant-owned inventory at the China warehouse for repeat fulfillment. The goods stay merchant-owned in both modes. That makes Woolii a hybrid operator across the two fulfillment paths, rather than a traditional freight forwarder or an inventory-led 3PL that requires stock before service begins.

  • Per-shipment settlement that reconciles line by line against the packed quote
  • Agent-ready Merchant API and optional standalone MCP tools; WooCommerce uses its own safe smart-routing connector
  • Merchant access is scoped through a workflow review; API access is granted by application

Common questions

What is the difference between a dropshipping agent and a 3PL?

An agent sources and purchases the product for you and then fulfills orders, so it sits between you and the factory. A 3PL never buys anything — it receives inventory you already bought and picks, packs and ships it. The agent changes who owns the supplier relationship; the 3PL changes where your stock physically sits.

What is a China fulfillment coordination layer?

An operator that runs the China leg for parcels you have already bought from your own suppliers: receiving them with evidence, consolidating, executing declared value-added services, packing, quoting from measurement, dispatching, and reconciling the bill. It never buys the goods, never handles the purchase payment, and requires no inventory commitment.

Which model is cheapest?

They are not comparable on a single number, because they buy you different things. An agent’s price includes a sourcing margin you cannot see; a 3PL’s price includes storage on goods you already paid for; a coordination layer prices per shipment with no stock commitment. Compare what each asks you to give up, then compare fee structures within the model you picked.

Can I use more than one of these at once?

Yes, and many merchants end up doing exactly that: a coordination layer for the China leg on everything, plus a destination-country 3PL for their fastest-moving SKUs only. The models are complementary far more often than they are alternatives.

Does a coordination layer require me to hold stock in China?

No. Supplier-parcel forwarding is the default path and requires nothing to be stocked. Holding merchant-owned inventory at the China warehouse is a separate, optional decision made per SKU, and the goods stay yours in both modes.

Which model is WooliiPorter?

A coordination layer that also operates the warehouse — technology-native and end-to-end rather than software-only. It runs receiving, value-added services with mandatory photo evidence, consolidation, packing, dispatch coordination, unified tracking and exception follow-up, with optional merchant-owned stocking on top. It is not a buying agent and not an inventory-led 3PL that requires stock before service begins.

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