Nothing delays a shipment at the port like bad paperwork. The goods can be perfect, the freight can be on time, and a single wrong figure on a document can leave a container sitting in a bonded warehouse racking up storage charges while customs asks questions. For a first-time importer, the stack of documents that comes with a shipment looks like bureaucracy. It isn’t. Each document does a specific job, and a supplier who issues them cleanly is saving you money you’ll never see on an invoice.
Here’s what you receive with an export order and what each one is actually for.
Commercial Invoice
The foundational document. It states what’s being shipped, the quantities, the unit and total values, the buyer and seller, and the agreed shipping term (FOB, CIF, DAP and so on). Customs uses it to assess duty and VAT, so the values have to be accurate and consistent with everything else in the pack. Mismatches between the invoice and the other documents are one of the most common causes of clearance delays.
Packing List
The physical companion to the invoice. It breaks the shipment down into cartons: how many, what’s in each, the dimensions, and the net and gross weights. Customs and your freight handler use it to verify the container’s contents without opening every box. If an inspection is triggered, this is the document they check the goods against — so it needs to match reality exactly.
Bill of Lading (B/L)
The single most important document in the pack, because it’s three things at once: a receipt that the carrier has the goods, a contract of carriage, and a document of title — meaning whoever holds the original B/L has the right to claim the cargo. You typically can’t collect the goods at the destination without it. There are different types (an “original” B/L versus a “telex release” or a seaway bill), and which one is used affects how the goods are released. This is the document to handle carefully and never lose track of.
HS Codes — the number that sets your duty
Every product crossing a border is classified under an HS code (Harmonised System code) — an internationally standardised number that tells customs exactly what the product is. It matters more than buyers realise, because the HS code determines the duty rate applied. Classify a tool under the wrong code and you may pay more duty than you should, or pay too little and face penalties and back-duty when customs reclassifies it. The code on your commercial invoice should be correct and consistent across the documents, and where a product’s classification is ambiguous, it’s worth confirming the right code before shipping rather than arguing about it at the port. Under a free trade agreement, the HS code is also what determines whether a given product qualifies for the preferential tariff in the first place — so it’s directly tied to the savings below.
Certificate of Origin — and why it can save you serious money
A Certificate of Origin (CO) states where the goods were actually made. At its simplest, it’s a customs formality. But under a free trade agreement, it becomes the key that unlocks lower tariffs — and this is where most buyers leave money on the table.
The clearest example right now is Serbia. Serbia is not in the EU customs union, so it sets its own import tariffs — and since 1 July 2024, the China–Serbia Free Trade Agreement has been in force, progressively eliminating tariffs on around 90% of tariff lines, with more than 60% dropped to zero immediately and the rest phasing down over the following years.
Here’s the catch that catches people out: the preferential rate is not automatic. To claim it, the importer must present a valid China–Serbia Certificate of Origin, issued by an authorised Chinese body, at the moment of customs clearance in Serbia. No certificate, no preferential rate — you simply pay the standard tariff, which can run anywhere from a few percent into the double digits depending on the product. A buyer who doesn’t know to ask for the correct CO pays duty they were entitled to skip. A supplier who issues it as a matter of course hands you the saving.
This single point is worth more to a Balkan importer than almost anything else in the document pack, and it’s exactly the kind of detail a local distributor reselling to you has no reason to mention.
Product Compliance Documents (CE and others)
For tools sold in Europe, the relevant compliance paperwork — a CE Declaration of Conformity, and test reports or technical files where applicable — establishes that the product meets the required standards. This matters at two points: it can be checked at import, and it’s what protects you, the seller, if a product is ever questioned downstream. Selling non-compliant goods is the importer’s liability, not just the factory’s, so this paperwork is part of your protection, not a formality.
Read More: China Export Order Timeline
Other documents you may see
Depending on the goods and route, a shipment may also include a fumigation or ISPM 15 certificate (required when wooden pallets or packaging are used, confirming the wood was treated against pests), insurance certificates (under CIF), and any inspection certificates if a third-party QC was carried out.
A simple document checklist
Before a shipment leaves, you should expect — or know to ask for — the following, as applicable to your goods and route:
- Commercial invoice
- Packing list
- Bill of lading (and clarity on which type, and how the goods will be released)
- Certificate of origin — and specifically the FTA certificate for your market, where one applies
- CE Declaration of Conformity and supporting technical documentation, for tools sold in Europe
- Fumigation / ISPM 15 certificate, if wooden packaging is used
- Insurance certificate, under CIF
- Any third-party inspection certificate, if QC was carried out
If a supplier hesitates over this list, that hesitation is information.
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The real point
Documentation is where a professional supplier and an amateur one separate, and you only notice the difference when something goes wrong. Clean, consistent, complete paperwork is the difference between a container that clears in a day and one that sits at the port while charges mount. And in the specific case of the documents that unlock preferential tariffs, it’s the difference between paying duty and not paying it at all.
When you’re choosing who to import from, ask a simple question: will you issue a full document set, and the correct Certificate of Origin for my market? The answer tells you a lot about who you’re dealing with.
Bell Tower issues complete export documentation as standard, including the China–Serbia Certificate of Origin for buyers claiming preferential FTA tariffs, and CE conformity paperwork for tools sold into Europe. Tell us your destination market and we’ll confirm exactly which documents apply.
Read More: Ocean Transit Tool Protection Guide
