Parts are classified by function, not by machine brand
A common assumption is that a part is classified by the machine it fits. In practice, classification follows what the part is and what it does. Undercarriage components, bucket teeth, hydraulic cylinders, pumps, filters, bearings and electrical items can sit under different headings, and the heading decides the duty rate at the destination and whether any permit is needed.
This matters commercially. Two shipments of the same order can carry different duty treatment if the lines are classified differently, and a mis-declared line is a problem for the importer, not the exporter. The practical rule is to agree the classification before the goods are packed, in writing, with the buyer's customs broker copied in.
Nearly all of it falls inside Chapter 84, which covers machinery and mechanical appliances, and the parts of earthmoving machinery generally sit within it. Under that chapter the subheadings separate parts by component — engines, pumps, transmissions, and the specific part families of the machines concerned. Getting the six-digit and eight-digit levels right is the broker's job, but seller and buyer should agree the description that leads to it.
The document set on every shipment
A clean export file has a small number of documents and each has one job. The commercial invoice states what was sold, to whom, for how much and on what terms. The packing list names what is in each package, how it is packed and what it weighs. The bill of lading is the carrier's receipt and the document that releases the goods at destination. The certificate of origin states where the goods were produced, which is what a preferential tariff claim depends on.
Around those four sit the conditional documents: an insurance certificate where the agreed terms put risk with the seller beyond a named point, a treatment mark on any solid-wood packing, and inspection or test certificates where the buyer's contract or the destination requires them.
The point to hold on to is that the invoice, the packing list and the bill of lading have to agree with each other line by line. When a weight or a description changes on one document and not on the others, the shipment stops at destination while someone reconciles it.
Certificate of origin: the document buyers ask about and get wrong
A certificate of origin is the document a buyer uses to claim a reduced or zero duty under a trade agreement. A general certificate simply states the country of production. A preferential version issued under an agreement — for example the arrangements between China and ASEAN, or the regional framework that covers several markets — has to be issued in the correct format, by the correct authority, and within its validity window.
Two errors are common. The first is a mismatch between the origin certificate and the commercial invoice: a different consignee, a different description or a different date can void the claim. The second is late application. A preferential certificate is not something to request after the goods have cleared; it has to be arranged with the shipment, and the buyer should say at quotation stage that they intend to claim preference.
Packing list and the wooden-packing rule
The packing list is the document that keeps the delivery reconcilable. A list that names each part, its quantity, its packing type and its weight lets a buyer clear, count and check without opening sealed crates on the dock. A list that says only how many cartons there are pushes that work onto the buyer at the worst possible moment. Guangzhou Shenyue Machinery Technology Co., Ltd. builds that list from the actual load, so the document and the container agree before the doors close.
Solid-wood packing is a separate compliance point. Many destinations require wood packaging to carry an international treatment mark, and untreated wood can be refused or treated at the buyer's cost. Where the requirement is unclear, the safe choice is to use processed board or to declare the wood and treat it properly rather than to hope the shipment passes.
Where this sits in a quotation
Guangzhou Shenyue Machinery Technology Co., Ltd. has exported excavator parts from Guangzhou since 2007 and treats documentation as part of the commercial offer rather than an afterthought. A commercial invoice, a packing list that matches the load and the shipping documents for the agreed terms are standard, and any certificate a buyer needs for import clearance is raised at quotation stage, before the goods are packed.
We are an independent supplier, formally authorized for five brands — Garrett, Mitsubishi Heavy Industries, TONGMYUNG, NIKURA and Marusan — and supplying other machine brands through original channels or as OEM-quality and aftermarket lines. What we are not is a customs authority; classification and treaty treatment are for the buyer's broker to confirm, and the most useful thing we can do is describe the goods accurately and consistently across every document.
Frequently asked
Who decides the HS code, the seller or the buyer?
Both should agree it, and the buyer's customs broker confirms it for the destination. The seller knows what the goods are and can describe them precisely; the buyer's broker knows the local tariff and the treatment that applies. Leaving it to one side alone is how a shipment attracts the wrong rate. Guangzhou Shenyue Machinery Technology Co., Ltd. describes the goods consistently across the invoice, the packing list and the bill of lading, and expects the buyer's broker to confirm the heading that follows from it.
Do I need a certificate of origin for every shipment?
No. A general certificate is only required where the destination asks for it. A preferential certificate is only worth arranging when the buyer actually intends to claim reduced duty under an agreement, and then it must be issued in the right format and with the shipment, not after it.
What happens if the packing list and the invoice disagree?
The consignment is held at destination while the difference is reconciled, which costs time and often storage. Weights, descriptions and quantities should be checked against each other before the container is sealed, because fixing it later is done with paperwork and emails rather than with a quick edit.
Send the machine model, serial number, the part numbers you have and the quantity. That is all we need to quote and confirm fitment before payment.
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