How to Vet a Dropshipping Supplier Before You Sell

The supplier decision is the single highest-leverage choice in a dropshipping business. Marketing can be fixed in a week. A supplier who ships late, sends the wrong variant, and disappears when you raise a dispute will cost you your payment processor, your ad account, and eventually your store.

This is the vetting process we run before a single product goes live.

Stage 1: Paper checks (30 minutes, before you talk to anyone)

Company existence. Search the registered company name — not the store name — in the relevant business registry. In China, ask for the business licence and check the unified social credit code. In the UK, Companies House. In the US, the state registry. A supplier who will not give you a registered entity name is a reseller pretending to be a factory, at best.

Trading history. On marketplaces, look at years active, not just rating. A 4.9 rating with eight months of history and 40 transactions means nothing. Look for 2+ years and hundreds of completed orders.

Product category focus. A supplier listing pet supplies, phone cases, and kitchen gadgets is an agent buying from other people. That is not automatically bad, but it means their quality control is somebody else's quality control.

Digital footprint. Reverse-image search their product photos. If the same photos appear on 500 stores, you are buying an undifferentiated product and you must plan to shoot your own media.

Stage 2: Communication test

Before you order anything, send one email with three specific questions and time the response.

1. What is your production lead time for 50 units, and what changes at 500?
2. What is your defect rate on this SKU over the last six months, and how do you handle defective units?
3. Can you ship with my branding on the packing slip and no supplier marketing inserts?

What you are measuring:

• Speed — a reply inside 24 business hours is the minimum.
• Specificity — real numbers versus "very good quality, best price".
• Willingness to say no — a supplier who agrees to everything instantly will also agree to deadlines they cannot meet.

If English (or your working language) is poor but the answers are precise, that is fine. If the language is fluent but the answers are vague, that is a problem.

Stage 3: Sample order — the part nobody skips twice

Order at least three units, ideally to two different addresses, paying full price like a normal customer.

Record, in a spreadsheet:

• Date ordered, date dispatched, date delivered — and calculate the real transit time separately from handling time.
• Carrier used and whether tracking updated in the destination country. Tracking that goes dark after leaving the origin country causes chargebacks.
• Packaging condition on arrival, and whether any supplier marketing was inserted.
• Product versus listing photos — exact colour, exact dimensions, exact material.
• Weight and dimensions, so your shipping rates are accurate.
• Any smell, sharp edges, loose stitching, or electrical issue.

Then deliberately create a problem: report one unit as defective and request a replacement or refund. How a supplier behaves when something goes wrong is the only test that matters. Note how many messages it took, how long it took, and whether they demanded photo evidence in an unreasonable way.

Stage 4: Compliance and documentation

Skipping this is what turns a good year into a legal problem.

• CE / UKCA / FCC marking for electronics and toys sold into those markets, with the actual test report — not a photo of a logo.
• Materials declarations for anything touching skin or food.
• Battery shipping documentation for anything with a lithium cell. Many carriers will refuse the shipment without it.
• Intellectual property. If the product resembles a branded design, assume you will receive a takedown. Ask directly whether they hold a licence, and get it in writing.
• Invoices with the correct declared value. Suppliers who under-declare customs value to "help you" are creating a liability that lands on you, the importer.

Stage 5: Capacity and continuity

Ask three questions that reveal whether they can survive your success:

1. What is your maximum daily dispatch volume for this SKU?
2. What happens during Chinese New Year, Golden Week, or your local holiday period — and how much notice do you give?
3. Do you hold stock, or do you produce on order?

Then plan around the answers. Every store that collapses in February planned around a supplier who was closed for three weeks and did not mention it.

Red flags that end the conversation

• Refuses a sample order or wants payment outside the platform for it.
• Cannot provide a registered business name.
• Quotes a price dramatically below every other quote for the same item.
• Promises 3–5 day delivery from overseas to a country where that is not physically routine.
• Pressures you to order large volume immediately.
• Will not put lead times in writing.

Green flags worth paying more for

• Gives you a defect rate and it is not zero. Honest suppliers have defects.
• Proactively tells you a date will slip before you ask.
• Offers a dedicated contact person with a direct line.
• Will hold a small buffer stock for you after a few months of consistent orders.
• Handles a sample defect without argument.

Scoring template

Score each supplier 1–5 and refuse to launch below 3.5 average:

Criterion	Weight
Delivery time consistency	25%
Product quality vs listing	25%
Problem resolution behaviour	20%
Compliance documentation	15%
Communication speed and clarity	10%
Price competitiveness	5%

Notice that price is weighted last. A supplier who is 8% cheaper and two weeks slower will lose you far more in refunds, chargebacks, and account suspensions than the margin you gained.

Always vet a second supplier

Even when the first one is excellent. Run the same process on a backup for your top three SKUs and place a small live order with them every quarter so the relationship stays warm. The cost of that redundancy is a few hundred currency units per year. The cost of not having it is your whole Q4.