Shipping CO2 cylinders across borders? Sounds exciting—until customs holds your entire container for missing a single piece of paper. To clear CO2 tanks through EU and US customs, you must prepare certificates like DOT or TPED, a detailed invoice, MSDS, and a dangerous goods declaration. Without them, your shipment might get delayed or rejected. You don’t want your goods stuck at port or face unexpected fines. That’s why this article covers everything I prepare before exporting gas cylinders to the US and Europe. Stick around—even a minor document issue can lead to weeks of delay. Table of Contents Why do CO2