A small test order is forgiving. A large one is not. Get the supplier wrong on a big batch and you can lose the whole shipment, your deposit, and a month of working capital. This is a vetting checklist for 1688 suppliers before you commit serious money to a single order.
Why large orders need different due diligence
When you place a test order of 50 to 100 units, the exposure is capped. If the quality is off you lose a small amount, absorb the lesson, and switch sources. But when you scale up to 500 or 1,000 units to bring the per-unit price down, the stakes are different.
The capital tied up in a large shipment often equals one to two months of revenue. Lead time from order to arrival at your warehouse averages 18 to 30 days by road or sea freight, sometimes longer if there is a border backlog or the carrier is slow. During that window your money is frozen. You cannot pull it back, you cannot switch suppliers, and if the goods land wrong you have very few options.
Vetting before a large order is not about finding reasons not to buy. It is about confirming the supplier has the capacity and consistency to hold quality when volume goes up, before your money leaves your account.
Reading the supplier profile on 1688
Every supplier page on 1688 carries signals worth checking before you even send a message.
Years in operation. A shop open for less than a year needs more evidence before a large order. That does not make them bad, but there is not enough history to assess. A supplier with three or more years in the same category has usually survived a few difficult periods and is still standing.
Transaction score across three dimensions. 1688 scores suppliers on product description accuracy (whether what arrived matched the listing), service attitude, and shipping speed. Check whether all three are consistent. If the shipping score is noticeably lower than the other two, that supplier tends to be slow to ship.
Response rate and response time. A supplier who answers promptly before you place an order usually handles problems faster too. One who replies slowly or gives vague answers that do not address your specific question is worth noting.
Store type. On 1688 you will mostly encounter two types: factories and trading companies. Factories typically offer better pricing on larger batches, more flexibility on MOQ over time, and can often accommodate small packaging changes. Trading companies tend to respond faster and carry more variety, but there is usually an added margin layer. Neither is strictly better. Know which you are dealing with so your expectations are calibrated correctly.
Checking transaction history and reviews
On the specific product page, scroll to reviews and sort by the most recent, not the most helpful. This is where buyers leave honest feedback when something went wrong.
Look for reviews that mention: goods that differed from the listing photos, materials that felt cheaper in person, poor packaging that led to damage in transit, or slow dispute resolution. One or two negative reviews spread over many months is normal. Multiple reviews citing the same specific problem is a pattern worth taking seriously.
Also look at the total units sold on that specific product, not just the store's overall volume. A product with several hundred orders and clean reviews has been validated by the market. A brand-new listing with zero sales means you are the test buyer, which is not always bad, but it calls for a smaller first order regardless.
Request a sample before committing to the large order
For any large order, a sample is non-negotiable. The point is not only to see what the product looks like. It is to check whether the mass-production run matches the sample.
When requesting a sample, ask clearly:
- Is this pulled from your current production line, or is it a special sample made to a higher standard for prospecting? Some suppliers produce showcase samples that are better than the batch run. Ask this directly.
- What is the MOQ for the large order and at what quantity does the price tier change?
- Will production lead time change for a large order compared to what you tested with?
When the sample arrives, inspect it against a consistent checklist: material, dimensions, color versus the listing photos, packaging quality, and any point that is likely to fail in transit. Photograph everything and save it alongside the supplier record to compare against when the batch arrives.
Ask directly about production capacity
Many buyers skip this because it feels awkward. But if you are placing an order that represents 30 to 50 percent of your available capital, you need to know whether the supplier can actually deliver on time.
Ask plainly, in simple language (through machine translation if needed):
- How busy is the factory right now, and what is your current estimated production time?
- If I order X units, how many days will it take to complete?
- If I need to add quantity after placing the order, is that possible, and by how many days does it push the timeline?
Specific answers with numbers are a good sign. Vague answers like "no problem" or "we are very fast" without an actual time frame need a follow-up. A professional supplier knows their own production schedule.
Another useful signal: a supplier who proactively asks about your receiving timeline and coordinates around it is running an actual schedule, not a reactive operation.
Agree on terms before transferring money
This step matters most and gets skipped most often, especially once you have built some comfort with a supplier through a few small orders.
Deposit level. Most suppliers ask for 30 to 50 percent upfront before production starts. Some require 100 percent from new buyers or for small orders. For a large order from an established buyer, it is usually possible to negotiate a lower deposit and pay the balance after a pre-shipment inspection or after the goods are ready to ship. That leverage is worth holding onto.
Defect policy. Ask the supplier what their policy is when a batch arrives with a defect rate above a certain level. Some suppliers will replace or compensate if the defect rate exceeds an agreed threshold, typically somewhere around 2 to 5 percent depending on the category. Get this agreed in writing before the order, even if it is just a message exchange on the 1688 app. Chat history is evidence if a dispute comes up later.
Specifications in writing. For a large order, send the product specifications in the chat and ask the supplier to confirm them. Color, dimensions, materials, packaging, count per carton. The details that seem obvious are the ones that most often go wrong when they are not written down.
Build a brief supplier file
Before finalizing a large order, take five minutes to build a short record for this supplier. It does not need to be elaborate. It just needs to be enough to compare and revisit later:
- Store name, 1688 link, years active
- Transaction scores across all three dimensions
- Orders placed and outcome of each
- Notes from the sample inspection
- Agreed terms (deposit, defect policy, specifications)
- Typical response time
This file saves you from starting over on due diligence when you reorder, and makes it easier to compare suppliers if you need to switch sources.
Signals that should slow you down
Even after vetting, certain signals are worth pausing on, or at least reducing the order size for this round:
- The supplier refuses or avoids providing a sample before a large order
- The price shifts after you have asked for more detailed information
- The supplier pushes urgency without a clear reason
- Their answers about production time and capacity are inconsistent across separate conversations
- The product has no sales history, or the store was very recently registered
These do not necessarily mean the supplier is dishonest. They mean you do not yet have enough information to stake a large batch on this relationship.
Bottom line
Vetting a supplier before a large order takes less time than recovering from a bad one. Read the profile carefully, check recent reviews, get a sample, ask directly about capacity, and lock down the terms before any money moves. None of those steps guarantees a perfect shipment, but each one cuts the odds of arriving at a situation where you have a warehouse full of unusable stock and a supplier who will not take responsibility.