Supplier Due Diligence Checklist
Use this before payment or onboarding.
Evidence Control
Many supplier disputes begin with a sentence in a chat window. A sales contact promises a material grade, a delivery date, a refund, or a bank change. The buyer treats that message as a company commitment. Later, when the order fails, the supplier says the employee had no authority, misunderstood the requirement, or left the company. A communication record review helps buyers turn scattered messages into usable evidence before the order depends on them.
The first question is simple: who is speaking for the supplier? A buyer should record the contact's full name, Chinese name if available, title, phone number, email address, chat account, and relationship to the legal company. A general sales title is not enough for high-value decisions. The buyer needs to know whether this person can approve price, payment terms, bank details, engineering changes, and dispute settlements.
Ask the contact to confirm the legal company name and business license name in writing. If the contact uses a personal email, a trading platform inbox, or a social account, request one confirmation from a company-domain email or stamped document. That small step often exposes situations where a broker, former employee, or unrelated sales agent controls the conversation.
Sales conversations move quickly. A supplier may say that a product is available, that a certificate exists, or that a shipment can leave next week. Those claims only help the buyer if the record shows exactly what the supplier agreed to provide. Before payment, convert important points into a short confirmation list: product model, material, quantity, standard, packaging, inspection rule, delivery term, beneficiary name, and refund condition.
Send the list back to the supplier and ask for a direct written reply. Avoid vague confirmations such as "noted" or "we will try." Useful replies say that the named supplier accepts the listed terms. For custom goods, attach the drawing revision, sample approval photo, or specification sheet to the same confirmation chain.
The buyer should treat three changes as high risk: bank account changes, company name changes, and product specification changes after deposit. A sales contact may have authority to quote, but not to redirect funds or change contract parties. Ask for a stamped notice, a director-level confirmation, or a reply from the company-domain address before acting on those changes.
If the supplier asks for payment to another company, the communication record should explain why. A normal explanation names the exporter, states its role, and matches the invoice trail. A weak explanation asks the buyer to trust a private account, a Hong Kong entity with no clear link, or a beneficiary introduced only through chat. The record should make the decision easy for finance to reject or escalate.
Screenshots help, but screenshots alone can be challenged. Keep the original emails, platform messages, chat exports, attachments, timestamps, and sender identifiers. Save files with dates and short names so another person can follow the order history without asking the buyer who handled it. If the supplier later deletes messages or changes an account name, the buyer still has a usable trail.
For material commitments, move the conversation into email or a signed document. Chat works for speed, but email creates a cleaner chain for finance, management, lawyers, and insurers. If the supplier refuses to repeat a key promise outside chat, treat that refusal as a risk signal.
A good communication file should answer five questions: which legal company is the supplier, who represented it, what did the supplier commit to, who approved risky changes, and what evidence supported payment. The file does not need to be complex. A one-page decision note with links to the license, invoice, bank proof, certificate check, and message confirmation gives the buyer a defensible position.
This habit matters most when a buyer changes staff, handles multiple suppliers, or buys under time pressure. Without a decision record, the company relies on memory. With one, the company can see whether the order followed a reasonable verification process. That is often the difference between a manageable supplier issue and a preventable loss.
Because buyers often rely on messages for payment, specification, delivery, and refund decisions, and those messages may not come from a person with authority.
Screenshots help, but buyers should also keep original emails, platform records, chat exports, timestamps, attachments, and company confirmations.
Bank changes, company-name changes, product specification changes, refund promises, and shipment commitments should receive written confirmation from an authorized supplier source.
Use this before payment or onboarding.
Keep a record finance can review.
Choose the right depth for the decision.