Supplier Guide
How to Verify Dunnage Air Bag Suppliers in China
Due-diligence guide for verifying dunnage air bag suppliers in China: construction evidence, pressure testing, valve quality, capacity, and load-trial requirements for export programs.
Quick answer
Verify a dunnage air bag supplier with construction specs, valve leak evidence, pressure-hold tests, and a trial in your void geometry. Catalog size charts do not prove bags will hold a shifting export load.
Confirm what they actually make
Ask whether the plant produces bags in-house, assembles bought film, or trades another factory’s goods. Request factory address, ply construction examples, and recent export references.
Audit valves and seals
Slow leaks after filling are a common field failure. Require valve type, sealing method, and a documented hold-pressure check after inflation.
Match bags to your voids
Send void dimensions and load photos. Approve sample bags in a realistic gap, not only inflated on a warehouse floor without lateral constraint.
Review capacity and packing
Empty bags must arrive dry, labeled by size, and packed to survive inbound freight. Confirm lead times at your seasonal peak, not only list prices.
RFQ
Void map; bag sizes; ply/valve type
Pressure-hold method; sample trial plan
Factory evidence; monthly capacity
Empty packing; Incoterms; change control
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