Kitting and assembly is the work of combining separate items into one ready-to-ship unit before an order arrives. A skincare set, a subscription box, a phone with its charger and case, or a crowdfunding reward with five parts are all kits. Instead of picking five items for every order, the warehouse picks one finished kit, which makes fulfillment faster, cheaper and far less error prone.
This guide explains how kitting fulfillment works, the main types of kits, what it costs, and when it makes sense to do your kitting in China, close to your suppliers, rather than after the goods land.
Kitting vs assembly: what is the difference?
The two words are often used together, but they describe slightly different jobs.
- Kitting groups finished items into one package with a single SKU, such as a gift set or a bundle of three products sold as one.
- Assembly builds or partly builds a product from components, such as fitting a battery, attaching accessories or putting parts into a display case.
Many orders use both. A starter kit might need a device assembled, then packed with a manual, a cable and an insert card in a branded box. A good fulfillment partner handles both steps in the same workflow.
How the kitting process works
- Define the kit: list every component, the quantity of each, the packaging and the inserts. This bill of materials becomes the kit’s own SKU.
- Receive and check components: each part arrives, is counted and is inspected before it is stored.
- Build kits in batches: the team assembles a planned quantity of kits ahead of demand, following a photo work instruction so every kit is identical.
- Quality check finished kits: a sample of each batch is opened and checked against the bill of materials.
- Store kits as ready stock: inventory shows finished kits and remaining components separately, so you always know how many you can sell.
- Pick, pack and ship: when an order comes in, the warehouse picks one kit instead of several items and ships it.
Some brands prefer on-demand kitting, where kits are built only when an order arrives. It avoids building kits that may not sell, but each order takes longer to ship. Most brands pre-build their best sellers and build slower kits on demand.
Selling bundles, gift sets or subscription boxes? Tell us what goes in your kit and your monthly volume, and we will price assembly, storage and shipping.
Common types of kits
Product bundles and gift sets
Two or more products sold together, often for holidays or promotions. Bundles lift average order value and need careful inventory tracking so the bundle and the single items share the same stock.
Subscription boxes
A monthly or quarterly box with changing contents, usually shipped to every subscriber in a short window. Our guide to subscription box fulfillment from China covers costs and timelines in detail.
Crowdfunding and launch rewards
Several reward tiers, each with a different set of items, shipped to backers in one large wave. See our crowdfunding fulfillment guide for how these campaigns are planned.
Sample, starter and promotional kits
Trial sizes, onboarding kits for new customers, influencer boxes and trade show packs. Volumes are smaller but presentation matters most.
Benefits of outsourcing kitting fulfillment
- Faster dispatch, because one pick replaces several and packing is already done.
- Fewer errors, because kits are built and checked in batches against a fixed specification.
- Lower cost per order, since batch assembly is quicker than packing items one order at a time.
- Better unboxing, with branded boxes, tissue and insert cards added as standard. Our guide to custom packaging for ecommerce covers the options.
- Cleaner inventory data, with kits and components tracked separately.
What kitting and assembly costs
Kitting is usually priced per kit or per hour of labour, on top of normal storage, pick and pack and shipping. The price depends on how many components go into each kit, how long assembly takes, whether there are inserts or special packaging, and how many kits are built per batch. Simple two-item bundles cost little to assemble, while multi-part kits with folding, wrapping or light assembly cost more. Ask for the price per kit at your real volume, plus any setup fee for a new kit design. Our overview of 3PL value-added services explains how these fees fit together.
Why kit in China instead of after import
If your components are made in China, kitting there usually makes more sense than shipping every part separately and assembling later.
- Components arrive from several suppliers into one warehouse, so you avoid paying international freight on each part separately.
- Problems are fixed before export: a faulty part or a missing insert can be replaced locally in days, not weeks.
- Labour for batch assembly is usually lower in China than in a US or European warehouse.
- Finished kits can ship directly to customers or as bulk cartons to Amazon FBA or your own warehouse.
Want your kits assembled before they leave China? We receive parts from all your suppliers, build and inspect your kits, then ship them worldwide.
How Fulfillmen handles kitting and assembly
Fulfillmen runs kitting and assembly from its warehouses in Shenzhen and Hong Kong, with a US warehouse for kits that need fast domestic delivery. We consolidate components from your suppliers, check them on arrival, build kits in batches to your specification, inspect each batch, and store finished kits as ready-to-ship stock. Orders sync from Shopify and other platforms, and each kit is shipped on the lane that fits your customer’s country.
Kitting is part of our wider fulfillment services, alongside pick and pack, custom packaging and quality control.
Ready to simplify your kits? Send us your kit list and order volume and we will reply with a full cost per kit.
Frequently asked questions
What is kitting and assembly in fulfillment?
Kitting and assembly is the process of combining separate items, and sometimes building products from components, into one ready-to-ship unit with its own SKU. The warehouse then picks and ships the finished kit instead of several separate items.
What is the difference between kitting and bundling?
A bundle is the product offer, such as two items sold together. Kitting is the physical work of putting those items into one package, often with branded packaging and inserts, so the bundle can be picked and shipped as a single unit.
How much does kitting cost?
Kitting is usually charged per kit or per hour of labour, on top of storage, pick and pack and shipping. The price depends on the number of components, assembly time, packaging and batch size, so ask for a quote at your real volume.
Should kits be built in advance or on demand?
Pre-building kits makes dispatch fastest and suits steady sellers and subscription boxes. On-demand kitting avoids building stock that may not sell but adds time to each order. Many brands pre-build best sellers and build the rest on demand.
Can Fulfillmen assemble kits from several suppliers?
Yes. Your suppliers send components to our China warehouse, where we check them, build your kits in batches, inspect them and ship them to customers or to Amazon FBA and other warehouses.
