问题
A double door container has doors at both ends instead of just one. This makes loading and unloading faster, since cargo can pass straight through. They are often used for project cargo, drive-through storage, and event use. The structural strength is the same as a single-door container — the second door uses the same locking bars and seals.
你知道吗？
Double-door containers were created to improve access, not increase capacity. Being able to load from either end can reduce handling time and make it easier to separate different goods. 
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