In my 15 years in China, I've seen it all. A supplier might give you 5 emails of "satisfied customers." If you email them, you'll get a glowing review. But guess what? Those emails belong to their sales staff or friends.
For inflatable wrestling mats, the key is to ask for very specific, non-personal details about their past orders. Don't ask for a name; ask for a commercial invoice or packing list with the client's sensitive price info blacked out.

If a supplier says they export 5,000 inflatable wrestling mats to the USA every month, they must have Bills of Lading (BoL).
The BoL is a legal shipping document that lists the Shipper (the factory) and the Consignee (the buyer). If they can't show you a BoL from the last 90 days, they aren't an active exporter. You can even check their company name on sites like ImportYeti or Panjiva to see who they actually ship to.

A list of names is easy to fake. A detailed case study is much harder.
When vetting an inflatable wrestling mat factory, ask for:

Sometimes, a supplier will say: "We have an NDA with our clients and cannot share their names."
This is a valid point. However, it’s also a common excuse for a small trading company that doesn't have any real clients. If they refuse to share a name, say:
"I understand the NDA. Can you show me a Bill of Lading from last month with the client's name blacked out, but the 'Destination Port' and 'Product Description' visible?"
If they still refuse, it’s a huge red flag. A real exporter is proud to show their volume.

Scenario: You ask for a US reference. The supplier sends you an email address: gymnastic-pro-usa-123@gmail.com. They tell you it's a "Top 10 Gym Distributor" in California. What do you do?
@gmail account instead of a corporate domain.*Answer: B and C! Professional US companies almost never use free Gmail accounts for high-valueAnswer: B and C! Professional US companies almost never use free Gmail accounts for high-value B2B sourcing.
Don't be a "lazy buyer." A supplier’s word is only as good as the third-party data that backs it up. Ask for Bills of Lading, case studies with photos, and verification of their export volume.
If they can't prove they’ve shipped to your market before, you’re not just buying a mat—you’re buying a lot of unnecessary risk.
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