Start with the legal entity, not the website
Any supplier that can invoice is a registered legal entity, and the registration is checkable. Ask for the full registered company name in Chinese and English, the unified social credit code, and the registered address. Then check that the name on the quotation, the name on the invoice and the name on the bank account are all the same.
This single check removes a whole class of risk. A supplier whose bank account belongs to an individual rather than the company, or to a third company, is a red flag that has nothing to do with the parts and everything to do with whether your money is recoverable.
Test the authorizations you are shown
If a supplier says it is an authorized dealer for a brand, the authorization is verifiable with the brand. A letter on a supplier's own letterhead is not evidence. Ask which brands the authorization covers, for which territory and for how long, and then confirm it through the brand's regional office rather than through the supplier.
The honest answer is often more precise than the marketing. Guangzhou Shenyue Machinery Technology Co., Ltd. holds formal authorization for five brands — Garrett, Mitsubishi Heavy Industries, TONGMYUNG, NIKURA and Marusan — and does not claim authorization for machine brands outside that list. A supplier that is precise about what it is authorized for tends to be precise about everything else.
Look for stock and systems, not slogans
Claims about inventory should be checkable. Ask for a live photograph or a short video of the specific shelf position for a part you intend to buy, and ask whether the line ships from stock or is sourced to order. A supplier with real warehouses can answer immediately; one that is really a broker will answer vaguely.
Ask about the grade of a line in writing. Genuine, OEM-quality and aftermarket are three different products, and a supplier that will not name the grade on the quotation is one you will argue with after delivery. The same goes for condition: new, old stock, remanufactured and used are four different things, and the price should reflect which one you are buying.
The sample order and the reference check
Before a first container, place a sample order large enough to test handling and small enough to lose. The test is not only whether the part is right; it is whether the packing, the documents, the labeling and the communication hold up. A supplier that is organized for one order is usually organized for a thousand.
Ask for two or three references in your region or your market and actually call them. A reference that will talk about delivery performance and after-sales behavior is worth more than any certificate on a wall. A supplier that will not offer a reference at all is telling you that the answer would not help.
The red flags that repeat
The same warnings show up again and again. A price far below every other quote for the same grade, with no explanation of why. A refusal to name the maker of an aftermarket line. A change of bank account details by email shortly before payment. Pressure to pay a balance before the shipping documents are issued. Documents that describe the goods differently from the order.
None of these is proof of fraud on its own, but each one removes a reason to trust. A supplier that is comfortable being checked, that names grades in writing and that keeps its bank details stable is the one to build a relationship with, and it is worth paying a little more for that comfort. Guangzhou Shenyue Machinery Technology Co., Ltd. has supplied excavator parts from Guangzhou since 2007 and expects to be checked.
Frequently asked
Is a low price by itself a red flag?
Not by itself, but an unexplained low price is. If the same grade is offered well below every other quote and the supplier cannot say why — a stock clearance, a factory relationship, a different maker — then the difference is probably being funded by a change you have not been told about.
Do I need to visit the supplier in person?
For a first large order it is the most reliable check there is, because it settles the warehouse question in an afternoon. For smaller orders a live video call of the shelf and a sample order can substitute, as long as you actually place the sample and judge what arrives rather than what was promised.
What payment terms are safe for a first order?
A structure with a modest deposit and the balance against shipping documents is the common middle ground, because neither side carries all the risk. Paying in full up front to a supplier you have not checked is the arrangement most often followed by a dispute. Guangzhou Shenyue Machinery Technology Co., Ltd. works on that structure for a first order and would rather agree it in writing up front than discover the difference at the bank.
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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